# Difference Between Low Porosity Hair and High Porosity Hair Author: Nex Virox Team (Editorial Team) Reviewed by: Varshal Nirbhavane Published: 2026-09-01 Last updated: 2026-09-01 Canonical: https://nexvirox.com/difference-between/difference-between-low-and-high-porosity-hair/ **Quick answer:** The main difference between Low Porosity Hair and High Porosity Hair is how quickly they absorb and release moisture. Low Porosity Hair has tightly packed cuticles that repel water, making hydration difficult, while High Porosity Hair has raised cuticles that absorb water quickly but lose it just as fast.

Difference Between Low Porosity Hair and High Porosity Hair: Comparison Table

Aspect	Low Porosity Hair	High Porosity Hair
Definition	Cuticle layers lie flat and tightly packed, resisting water and product absorption.	Cuticle layers are raised or damaged, allowing water and products to enter quickly.
Core Mechanism	Tight cuticles block moisture entry, so water beads up and sits on the strand surface.	Lifted cuticles create gaps that let moisture pass in and out of the cortex freely.
Structure	Overlapping cuticle scales form a smooth, compact barrier that repels liquids.	Cuticle scales are lifted, cracked, or missing, exposing the porous cortex beneath.
Water Absorption	Takes several minutes to wet; water often pools on the surface before penetrating.	Absorbs water almost instantly, often fully saturating within seconds of contact.
Drying Speed	Dries very slowly because trapped moisture cannot easily escape the tight cuticle.	Dries rapidly as water evaporates quickly through the open, lifted cuticle layers.
Product Absorption	Rejects heavy oils and butters, leaving them coating the strand surface without sinking in.	Soaks up conditioners and oils rapidly, often requiring frequent reapplication to maintain moisture.
Moisture Retention	Retains moisture well once absorbed, keeping hair hydrated for extended periods.	Loses moisture quickly after wetting, leading to dryness and frizz within hours.
Frizz Response	Frizz appears mainly in humid weather when moisture forces its way past the tight cuticle.	Frizz develops constantly as the open cuticle absorbs ambient humidity and loses internal water.
Elasticity	Stretches minimally when wet and returns to shape quickly due to intact protein bonds.	Stretches noticeably when wet and may fail to spring back, indicating protein loss.
Breakage Risk	Low breakage risk when properly hydrated, but prone to product buildup that suffocates strands.	High breakage risk from swelling and weakening of the cortex during repeated wet-dry cycles.
Protein Needs	Requires minimal protein; excess protein causes stiffness, brittleness, and increased breakage.	Benefits from protein treatments to rebuild the damaged cuticle and restore structural integrity.
Conditioner Type	Needs lightweight, water-based conditioners with humectants like glycerin to penetrate the cuticle.	Needs rich, creamy conditioners with butters and oils to fill gaps and seal the cuticle.
Heat Response	Requires high heat during styling to open the cuticle and allow moisture or products to enter.	Responds to low heat; high heat worsens damage by further lifting the already-open cuticle.
Color Treatment	Resists dye penetration, so color may appear dull or fade faster unless the cuticle is lifted.	Accepts color readily but loses it quickly because dye molecules wash out through open gaps.
Chemical Processing	Processes slowly; relaxers and perms may require longer application times to achieve results.	Processes rapidly; chemicals penetrate deeply, increasing the risk of over-processing and damage.
Wash Frequency	Needs less frequent washing, roughly once weekly, to avoid stripping the natural lipid barrier.	Needs more frequent washing, often twice weekly, to remove buildup and reset moisture levels.
Styling Time	Takes longer to style because products sit on the surface and require heat or time to absorb.	Styles quickly as products penetrate instantly, but results may not last without sealing.
Scalp Oil	Natural sebum travels slowly down the strand, leaving ends dry and requiring manual distribution.	Sebum spreads quickly but cannot stay inside, so the entire strand feels dry and brittle.
Humidity Effect	Repels humidity initially, but prolonged exposure causes gradual swelling and surface frizz.	Absorbs humidity instantly, causing rapid swelling, tangling, and pronounced frizz.
Shine Level	Appears naturally shiny and glossy because the flat cuticle reflects light evenly.	Looks dull and matte because the raised cuticle scatters light in multiple directions.
Tangling	Tangles less frequently due to the smooth surface, but buildup can cause strands to stick together.	Tangles easily as lifted cuticles catch on neighboring strands during washing and combing.
Split Ends	Develops split ends slowly, mainly from mechanical damage like rough brushing or heat styling.	Forms split ends rapidly as the weakened cuticle splits and peels along the strand length.
Testing Method	Float test shows strands floating on water surface for several minutes before sinking slowly.	Float test shows strands sinking within seconds, confirming immediate water penetration.
Common Causes	Often genetic, with naturally tight cuticles that remain intact without external damage.	Usually acquired from bleaching, heat styling, chemical relaxers, or harsh environmental exposure.
Hair Type Match	Frequently found in straight or fine hair, though it occurs across all curl patterns.	Common in curly and coily hair, especially after repeated chemical or thermal processing.
Product Weight	Rejects heavy creams and oils, which leave visible residue and weigh the strand down.	Absorbs heavy products fully, but requires generous amounts to maintain lasting hydration.
Clarifying Need	Requires regular clarifying shampoos to remove product buildup that blocks moisture entry.	Needs gentle cleansing only; harsh sulfates strip the little moisture the open cuticle holds.
Repair Potential	Requires no repair; maintaining the intact cuticle with gentle care prevents future damage.	Can be partially repaired with protein and bond-builders, but lost cuticle cannot regenerate.
Typical Users	People with virgin, unprocessed hair who struggle with products sitting on the surface.	People who bleach, dye, or heat-style regularly and battle constant dryness and frizz.
Best-Fit Scenario	Ideal for low-maintenance routines using lightweight, water-based products and minimal heat.	Best suited for intensive moisture routines with protein treatments and regular deep conditioning.

What Is Low Porosity Hair?

Low porosity hair has tightly bound cuticles that resist moisture absorption. Water, oils, and conditioners sit on the strand's surface rather than penetrating quickly. This hair type exists because cuticle layers overlap flat and compact, creating a natural barrier. It requires heat or steam to open the cuticles for effective hydration.

Definition of Low Porosity Hair

Low porosity hair is a hair texture classification where the cuticle layer lies flat and tightly packed, preventing water and products from easily entering the cortex. The strand repels moisture, leading to product buildup and prolonged drying times. This structural trait is genetic and remains consistent along the entire hair shaft.

Key Characteristics of Low Porosity Hair

Characteristic	What It Means in Practice
Water resistance	Water beads up on the surface and takes several minutes to saturate the strand during washing.
Slow drying time	Hair stays damp for hours after washing because moisture cannot easily escape the tightly closed cuticles.
Product buildup	Heavy oils and butters accumulate on the surface, leaving a greasy film without providing real hydration.
Smooth texture	Strands feel sleek and glass-like to the touch because the flat cuticles reflect light evenly.
Low elasticity	Hair stretches minimally when wet and may snap rather than bounce back under tension.
Resists chemical processing	Dyes and relaxers penetrate slowly, requiring longer processing times or higher heat to work effectively.
Quick product absorption	Lightweight liquids like water-based leave-ins absorb faster than thick creams or heavy butter blends.
Minimal frizz	Flat cuticles repel humidity, keeping the hair shaft smooth and reducing environmental frizz.
Stiff strand feel	Individual hairs feel firm and wiry between fingers, lacking the softness seen in higher porosity types.
Requires heat for deep conditioning	Using a warm cap or steamer opens the cuticle, allowing treatments to penetrate instead of sitting on top.

Common Examples of Low Porosity Hair

Fine straight Asian hair - Dense, flat cuticles create a mirror-like shine and resist moisture penetration naturally.
Virgin type 2A waves - Untreated wavy strands with compact cuticles repel water and show product buildup quickly.
Type 3A loose curls - Curls with tight cuticle bonds feel smooth but struggle to absorb leave-in conditioners.
Type 4A coily strands - Dense coils with low porosity require steam treatments to open the cuticle for hydration.
Chemically untreated hair - Hair never exposed to bleach or relaxers retains its natural, tightly sealed cuticle layer.
Short-patterned natural hair - Tightly curled textures often show low porosity traits, especially when not heat-styled.
Fine-textured low-density hair - Thin strands with flat cuticles feel slippery and resist water absorption for minutes.
Hair with no heat damage - Strands that avoided flat irons and blow dryers maintain their compact, moisture-repelling structure.
Medium-thickness virgin strands - Untreated medium strands exhibit balanced low porosity behavior, needing warm water to hydrate.
Hair in humid climates - Low porosity strands repel ambient moisture, keeping the cuticle closed and limiting frizz formation.

Advantages and Limitations of Low Porosity Hair

Advantages	Limitations
Resists humidity and environmental moisture, keeping styles defined and frizz-free in damp weather.	Water and oils sit on the surface, causing heavy buildup that weighs hair down within days.
Maintains color longer because closed cuticles trap dye molecules inside the cortex.	Deep conditioners fail to penetrate without external heat, making treatments less effective.
Shows high natural shine and gloss because flat cuticles reflect light uniformly.	Washing requires warm water and repeated wetting to fully saturate the strand.
Stays smooth and sleek between washes, reducing the need for daily styling.	Hair dries very slowly, increasing the risk of mildew odor if left damp too long.
Requires less frequent washing since the surface repels dirt and oil accumulation.	Protein treatments can cause stiffness and breakage because the cuticle cannot absorb them.
Holds braids and protective styles well due to the smooth, slippery strand surface.	Heavy butters and creams sit on top, leaving a greasy residue without hydrating the cortex.
Minimal breakage from normal handling because the compact cuticle resists mechanical damage.	Chemical processes like relaxers need longer processing times, increasing damage risk.
Easier detangling when wet because the smooth surface reduces friction between strands.	Styling products evaporate slowly, leaving hair feeling sticky or tacky for hours.
Retains natural oils on the scalp longer, reducing the need for frequent conditioning.	Hair feels stiff and wiry, lacking the soft bounce seen in higher porosity textures.
Responds well to lightweight water-based products that match its low absorption rate.	Heat styling is often necessary to open cuticles, which can cause cumulative thermal damage.

What Is High Porosity Hair?

High porosity hair has raised cuticles that let moisture enter and escape quickly. This means hair absorbs water fast but loses it just as fast, leaving strands dry, brittle, and prone to tangling. It often results from chemical processing, heat damage, or environmental wear.

Definition of High Porosity Hair

High porosity hair is a hair type where the outer cuticle layer is lifted or damaged, creating gaps that allow moisture and products to pass through freely. Unlike low porosity hair, which repels water, high porosity hair readily accepts moisture but cannot retain it, leading to chronic dehydration and increased breakage.

Key Characteristics of High Porosity Hair

Characteristic	What It Means in Practice
Fast water absorption	Hair gets wet instantly in the shower, often within seconds, because cuticles are open.
Quick drying time	Strands dry noticeably faster than normal hair, sometimes within 30 minutes after washing.
High tangling and knotting	Raised cuticles snag on each other and on fabrics, causing frequent tangles and matting.
Dull, rough texture	Light reflects unevenly off lifted cuticles, making hair look dry, frizzy, or lackluster.
Porosity test sinks	A strand placed in a glass of water sinks immediately because gaps let water flood the shaft.
Product buildup quickly	Open cuticles trap heavy oils and silicones inside, leading to greasy residue despite dry ends.
Frizz in humidity	Moisture enters the shaft rapidly in humid air, swelling the hair and causing frizz.
Breakage and split ends	Weakened cuticle layers expose the cortex, making hair fragile and prone to snapping.
Color fades faster	Dye molecules enter and exit easily, so color washes out noticeably within 2–3 weeks.
Heat damage history	Frequent flat ironing, blow drying, or bleaching correlates directly with increased porosity.

Common Examples of High Porosity Hair

Chemically relaxed hair – Sodium hydroxide or thioglycolate treatments permanently lift cuticles, increasing porosity.
Bleached blondes – Hydrogen peroxide strips the protective lipid layer, leaving hair sponge-like and porous.
Heat-styled curls – Regular 400°F+ flat ironing vaporizes moisture inside the shaft, cracking cuticles.
Frequent hair dye users – Repeated oxidative color applications enlarge cuticle gaps with each session.
Sun-exposed swimmers – Chlorine and UV rays degrade the cuticle's protein bonds, raising the edges.
Over-brushed wavy hair – Aggressive brushing when wet tears cuticle scales, especially on fine strands.
Long-term braid wearers – Tight traction and synthetic fibers rub cuticles smooth but eventually lift them.
Post-pregnancy hair – Hormonal shifts alter oil production, making previously normal hair more porous.
Hard water users – Mineral buildup from calcium and magnesium pries cuticles open over months.
Old, weathered hair – Years of brushing, styling, and environmental exposure naturally raise cuticle layers.

Advantages and Limitations of High Porosity Hair

Advantages	Limitations
Absorbs deep conditioning treatments rapidly, so masks work in under 5 minutes.	Loses moisture equally fast, requiring daily rehydration or leave-in products.
Accepts chemical color quickly, reducing processing time for hair dye applications.	Color also fades rapidly, needing frequent touch-ups every 2–3 weeks.
Responds well to protein treatments that temporarily fill cuticle gaps.	Protein overload can cause stiffness and breakage if used more than once weekly.
Allows lightweight oils to penetrate the shaft, providing immediate softness.	Heavy butters sit on the surface, creating buildup and greasy-looking strands.
Dries fast after washing, saving time for people with busy mornings.	Fast drying often means frizz, tangles, and rough texture without styling products.
Easy to style with heat because moisture escapes, reducing steaming and sizzling.	Heat styling worsens porosity, creating a cycle of increasing damage.
Accepts leave-in sprays readily, giving instant slip for detangling.	Detangling must happen wet; dry combing causes severe breakage and split ends.
Visible improvement with cold water rinses that temporarily seal cuticles.	Cold water effect lasts only hours, not providing long-term porosity repair.
Good candidate for bond-building treatments that repair internal disulfide bonds.	Bond treatments are expensive and require monthly salon visits for lasting results.
Shorter air-dry time reduces exposure to damaging heat tools.	Air-dried hair often looks dull, frizzy, and unshaped without a defined curl pattern.

Similarities Between Low Porosity Hair and High Porosity Hair

Shared Aspect	How Low Porosity Hair and High Porosity Hair Are Alike
Core Purpose	Both low porosity hair and high porosity hair serve to protect the scalp and regulate body temperature.
Biological Category	Low porosity hair and high porosity hair are both composed primarily of keratin protein fibers.
Growth Source	Both low porosity hair and high porosity hair originate from hair follicles located in the scalp.
Primary Input	Low porosity hair and high porosity hair both require water and natural oils for optimal health.
Primary Output	Both low porosity hair and high porosity hair produce sebum, a natural conditioning oil.
User Base	Low porosity hair and high porosity hair are both found across all ethnicities, ages, and genders.
Styling Workflow	Both low porosity hair and high porosity hair require a consistent washing and conditioning routine.
Detangling Method	Low porosity hair and high porosity hair both benefit from detangling while wet with a wide-tooth comb.
Drying Standard	Both low porosity hair and high porosity hair dry best when air-dried or dried with low heat.
Heat Constraint	Low porosity hair and high porosity hair both require a heat protectant before using hot styling tools.
Chemical Constraint	Both low porosity hair and high porosity hair are both vulnerable to damage from harsh chemical treatments.
Cost Range	Low porosity hair and high porosity hair both require investment in quality shampoos, conditioners, and treatments.
Risk Factor	Both low porosity hair and high porosity hair are both prone to breakage if handled roughly or over-manipulated.
Breakage Risk	Low porosity hair and high porosity hair both risk split ends and snapping when dry or brittle.
Moisture Loss	Both low porosity hair and high porosity hair can both lose moisture quickly in dry or low-humidity environments.
Product Buildup	Low porosity hair and high porosity hair both accumulate product residue if not clarified regularly.
Measurement Method	Both low porosity hair and high porosity hair can both be assessed using the float test on a glass of water.
Elasticity Test	Low porosity hair and high porosity hair both stretch when wet and should return to their original length.
Porosity Test	Both low porosity hair and high porosity hair can both be evaluated using a strand slip test between fingers.
Maintenance Routine	Low porosity hair and high porosity hair both need regular trims to remove damaged ends.
Washing Frequency	Both low porosity hair and high porosity hair both require washing at least once per week to stay clean.
Deep Conditioning	Low porosity hair and high porosity hair both benefit from deep conditioning treatments on a regular basis.
Protective Styling	Both low porosity hair and high porosity hair both thrive with low-manipulation styles that reduce friction.
Nighttime Care	Low porosity hair and high porosity hair both benefit from sleeping on a satin or silk pillowcase.
Sun Sensitivity	Both low porosity hair and high porosity hair can both suffer from UV damage if left unprotected.
Water Quality	Low porosity hair and high porosity hair both respond better to soft water than to hard water.
Humidity Response	Both low porosity hair and high porosity hair can both become frizzy in high humidity conditions.
Long-Term Outcome	Low porosity hair and high porosity hair both achieve greater length retention with consistent gentle care.
Overall Goal	Both low porosity hair and high porosity hair ultimately aim for a balanced moisture-protein ratio for strength.

Low Porosity Hair or High Porosity Hair: Which Should You Choose?

The deciding variable is your hair's response to water. If water beads up and sits on your strands for minutes, you have low porosity hair. If water absorbs instantly and your hair dries fast, you have high porosity hair. Match your routine to that test result.

When to Use Low Porosity Hair

Choose Low Porosity Hair when products sit on your hair without absorbing and you need lightweight moisture. It suits fine strands, humid climates, and routines using warm water and heat caps. If you wash weekly and avoid heavy butters, this classification guides your product choices.

When to Use High Porosity Hair

Choose High Porosity Hair when your hair absorbs water rapidly and loses moisture quickly. It fits coarse strands, frequent styling, and dry climates. If you need rich creams, sealing oils, and protein treatments, this classification drives your deep conditioning schedule and protective styling choices.

Common Misconceptions About Low Porosity Hair and High Porosity Hair

Common Myth	The Reality
Low porosity hair repels water completely and cannot get wet.	Low porosity hair absorbs water slowly, not at all; it eventually saturates but takes longer to fully wet.
High porosity hair is always damaged and unhealthy beyond repair.	High porosity hair can be naturally occurring or genetic, and it remains healthy with proper moisture retention routines.
You can determine porosity by seeing if hair floats in water.	The float test is unreliable; low porosity hair sinks slowly, but product buildup and oil alter the results.
Low porosity hair does not need moisture because it is naturally oily.	Low porosity hair needs lightweight water-based moisturizers because its tight cuticle blocks heavier oils from penetrating.
High porosity hair cannot hold any moisture no matter what you use.	High porosity hair absorbs moisture rapidly but loses it quickly; sealing with butters and oils locks hydration in.
Porosity is fixed at birth and never changes over a lifetime.	Porosity shifts with chemical treatments, heat styling, and aging, so both low and high porosity change over time.
Low porosity hair is always fine and thin in texture.	Low porosity refers to cuticle openness, not strand thickness; coarse and thick low porosity hair exists commonly.
High porosity hair is always coarse, rough, and visibly frizzy.	High porosity hair can feel smooth when conditioned well, and frizz depends on humidity and protein balance.
Protein treatments are only for high porosity hair, never low porosity.	Low porosity hair needs minimal protein, but a light protein treatment helps when it shows limpness or excess softness.
High porosity hair should avoid all protein because it causes breakage.	High porosity hair benefits from protein to fill gaps, but too much protein without moisture causes stiffness and snapping.
Low porosity hair dries fast because water slides right off it.	Low porosity hair dries slowly because the tight cuticle traps water inside the strand, prolonging drying time.
High porosity hair dries quickly because it releases water easily.	High porosity hair dries fast because the raised cuticle lets moisture escape rapidly into the surrounding air.
You only have one porosity type across your entire head of hair.	Porosity varies by section; low porosity at the roots and high porosity at the ends is a common mixed pattern.
Low porosity hair never frizzes in humid weather.	Low porosity hair frizzes less than high porosity, but humidity still causes some frizz when the cuticle lifts slightly.
High porosity hair is impossible to style without heat damage.	High porosity hair styles well with cool air, flexi rods, or braid-outs, avoiding heat that worsens cuticle damage.
Heavy oils like coconut oil are perfect for low porosity hair.	Coconut oil seals out moisture in low porosity hair, so lightweight oils like jojoba or argan work far better.
High porosity hair needs no sealing because it absorbs everything easily.	High porosity hair absorbs quickly but loses moisture fast, so sealing with shea butter or castor oil is essential.
Low porosity hair does not tangle or knot easily.	Low porosity hair tangles when product buildup prevents slip, making detangling harder without a slippery conditioner.
High porosity hair tangles only when it is dry and brittle.	High porosity hair tangles even when wet because the raised cuticle snags on adjacent strands during washing.
Shampooing low porosity hair once a week is always too much.	Low porosity hair needs clarifying shampoos weekly to remove buildup that blocks moisture from entering the strand.
High porosity hair should be washed daily to keep it clean.	Daily washing strips high porosity hair of essential oils; co-washing or gentle cleansing every few days works better.
Low porosity hair cannot use leave-in conditioners because they sit on top.	Low porosity hair benefits from watery leave-ins sprayed on damp hair, which penetrate better than thick creams.
High porosity hair never needs deep conditioning treatments.	High porosity hair requires weekly deep conditioning with protein and moisture to rebuild the damaged cuticle layers.
A strand stretch test tells you porosity accurately every time.	The stretch test measures elasticity, not porosity; low and high porosity hair both stretch differently based on protein levels.
Low porosity hair is resistant to all chemical treatments permanently.	Low porosity hair resists chemicals initially, but repeated treatments eventually force the cuticle open, raising porosity.
High porosity hair cannot be colored or bleached safely.	High porosity hair can be colored safely with bond builders and lower-volume developers to minimize additional cuticle damage.
Low porosity hair never needs heat to help products absorb.	Low porosity hair benefits from a warm cap or steamer, which gently lifts the cuticle to let conditioners penetrate deeper.
High porosity hair should skip oils entirely because they weigh it down.	High porosity hair needs oils as a final sealant, not a moisturizer, to trap water inside the porous strand.
Porosity determines your hair type, like curly or straight.	Porosity is independent of curl pattern; both low and high porosity hair occur across straight, wavy, curly, and coily textures.
You can permanently fix high porosity hair to become low porosity.	High porosity hair cannot become truly low porosity; consistent protein and moisture routines only temporarily reduce its porous nature.

Conclusion

Difference Between Low Porosity Hair and High Porosity Hair comes down to moisture absorption and retention. Low porosity repels water, needing heat and lightweight products. High porosity absorbs quickly but loses moisture fast, requiring rich butters and sealants. Choose low porosity care if water beads up; choose high porosity care if hair dries rapidly.

## FAQ ### What is the main difference between low porosity hair and high porosity hair? The main difference is how each hair type absorbs and retains moisture, which depends on the condition of the cuticle layer. Low porosity hair has tightly closed cuticles that repel water, while high porosity hair has raised, damaged cuticles that absorb water quickly but lose it just as fast. ### Which is better, low porosity hair or high porosity hair? Neither is inherently better, because each type has distinct strengths and challenges that require different care routines. Low porosity hair resists damage and holds moisture well once absorbed, while high porosity hair styles easily and dries fast but needs heavier products to prevent breakage. ### How can I tell if I have low porosity or high porosity hair? Place a clean strand of hair in a glass of room-temperature water to observe whether it floats or sinks after a few minutes. If the strand floats on top, you likely have low porosity hair, while a strand that sinks quickly indicates high porosity hair. ### Is low porosity hair more expensive to care for than high porosity hair? Low porosity hair is generally less expensive to care for because it requires lightweight, water-based products that are often cheaper than heavy butters and oils. High porosity hair typically needs more frequent deep conditioning treatments and protein-rich products, which can add up in cost over time. ### Is it safe to use heat styling tools on low porosity hair? Yes, low porosity hair can handle heat styling safely, but only with a heat protectant and moderate temperatures below 350°F. Because the tightly sealed cuticles resist moisture, excessive heat can cause the hair to become brittle and snap, so always use low to medium heat settings. ### Are products made for high porosity hair compatible with low porosity hair? No, products formulated for high porosity hair are usually too heavy and rich for low porosity hair, leading to greasy buildup. Low porosity hair needs lightweight, water-based products like humectants, whereas high porosity hair thrives on thick butters, oils, and protein treatments that low porosity hair cannot easily absorb. ### What is the biggest mistake beginners make with low porosity hair? The biggest mistake beginners make is applying heavy oils and butters to low porosity hair, which creates a greasy coating that blocks moisture. Instead, beginners should use water-based leave-in conditioners and seal with a small amount of a lightweight oil like jojoba to lock in hydration. ### Can I use the same shampoo for both low porosity and high porosity hair? Yes, you can use a gentle, sulfate-free clarifying shampoo for both hair types, but you must adjust how often you wash. Low porosity hair needs infrequent washing with a moisturizing shampoo to avoid buildup, while high porosity hair benefits from more frequent washing to remove excess moisture and product residue. ### Which hair type is best for a humid climate, low porosity or high porosity? Low porosity hair performs best in humid climates because its tightly closed cuticles resist absorbing excess moisture from the air. High porosity hair in humidity will swell, frizz, and lose its curl pattern rapidly because its open cuticles soak up water vapor easily. ### Can I switch my hair from high porosity to low porosity permanently? No, you cannot permanently switch your hair from high porosity to low porosity, but you can temporarily improve its condition with protein treatments. These treatments fill gaps in the damaged cuticle to reduce water loss for a few weeks, yet your hair will revert to high porosity once the protein washes out.