Discover YourHair Porosity Secret

Unlock the key to healthier, more vibrant hair by understanding your hair's unique porosity level. Learn personalized care techniques and product recommendations tailored to your hair's needs.

Scientifically-backed hair care advicePersonalized recommendations

Hair Science

The Science Behind Hair Porosity

Understanding the structure of your hair is key to proper hair care

Hair Structure Cross-SectionCuticleProtective outer layerCortexContains pigment & proteinMedullaCentral core

Hair Structure and Porosity

Each strand of hair is composed of three main layers: the cuticle (outer layer), the cortex (middle layer), and the medulla (innermost layer). The cuticle is made up of overlapping cells, similar to shingles on a roof, that protect the inner structure of the hair.

Hair porosity refers to how well your hair can absorb and retain moisture, which is determined by the condition of the cuticle layer. When the cuticle lies flat, moisture has difficulty penetrating the hair shaft. When the cuticle is raised or damaged, moisture can enter more easily but may also escape just as quickly.

Factors Affecting Hair Porosity

  • Genetics: Your natural hair porosity is largely determined by genetics
  • Chemical Treatments: Coloring, perming, or relaxing can alter porosity
  • Heat Styling: Excessive heat can damage the cuticle layer
  • Environmental Factors: Sun exposure, pollution, and hard water
  • Mechanical Damage: Rough brushing, tight hairstyles, and friction

Porosity Types

The Three Levels of Hair Porosity

Each porosity type requires different care approaches

Hair Porosity ComparisonLow PorosityTightly closed cuticlesResists moisture absorptionMedium PorositySlightly raised cuticlesBalanced moisture retentionHigh PorosityDamaged, open cuticlesPoor moisture retention

Low Porosity Hair

Low porosity hair has tightly closed cuticles that resist moisture absorption. This hair type is often naturally shiny but can be prone to product buildup.

Characteristics:

  • Takes a long time to get wet and dry
  • Products tend to sit on hair rather than absorb
  • Resistant to chemical processes
  • Prone to buildup and may need frequent clarifying
  • Often appears shiny when healthy

Care Tips:

  • Use heat when deep conditioning (steam or warm towel)
  • Apply products to damp hair
  • Use lightweight oils and products
  • Clarify regularly to remove buildup

Medium Porosity Hair

Medium porosity hair has a balanced moisture absorption and retention capacity. This hair type is generally the easiest to manage and style.

Characteristics:

  • Absorbs moisture well
  • Holds styles easily
  • Dries in a reasonable amount of time
  • Takes color treatments well
  • Requires minimal special care

Care Tips:

  • Regular conditioning treatments
  • Balance protein and moisture
  • Protect from heat and environmental damage
  • Maintain with regular trims

High Porosity Hair

High porosity hair has raised or damaged cuticles that allow moisture to enter and exit easily. This hair type requires extra care to maintain moisture.

Characteristics:

  • Absorbs water and products quickly
  • Dries very fast
  • Prone to frizz and tangling
  • Can feel dry and brittle
  • More susceptible to breakage

Care Tips:

  • Use leave-in conditioners and anti-humectants
  • Seal moisture with oils and butters
  • Regular protein treatments
  • Cold water rinses to help close cuticles

Testing Methods

How to Determine Your Hair Porosity

Simple at-home tests to identify your hair's porosity level

Hair Porosity Test MethodsFloat TestPlace hair in waterand observe if it floats or sinksSpray TestSpray water on dry hairand see if it absorbs or beads upSlip TestSlide fingers up a strand of hairto feel for bumps or smoothness

The Float Test

  1. Take a clean glass and fill it with room temperature water
  2. Take a clean strand of hair (one that has naturally fallen out)
  3. Place the strand on the surface of the water
  4. Observe what happens over the next 2-4 minutes

Results:

  • Low Porosity: Hair floats for a long time
  • Medium Porosity: Hair floats before slowly sinking
  • High Porosity: Hair sinks quickly

The Spray Test

  1. Make sure your hair is clean and completely dry
  2. Take a section of your hair and spray it with water
  3. Observe how the water interacts with your hair
  4. Note whether the water is absorbed quickly or beads up

Results:

  • Low Porosity: Water beads up on hair surface
  • Medium Porosity: Water gradually absorbs
  • High Porosity: Water absorbs immediately

The Slip 'n' Slide Test

  1. Take a clean strand of hair between your fingers
  2. Slide your fingers up the strand toward the scalp
  3. Pay attention to how the strand feels
  4. Note if it feels smooth or bumpy

Results:

  • Low Porosity: Hair feels smooth
  • Medium Porosity: Hair feels slightly bumpy
  • High Porosity: Hair feels very bumpy or rough

Important Testing Tips

For Accurate Results:

  • Test on clean hair without product buildup
  • Try multiple tests for more reliable results
  • Different parts of your hair may have different porosity
  • Test both roots and ends as they may differ

Remember:

  • Porosity can change over time due to damage or treatments
  • Hair products should be chosen based on porosity
  • Your hair may have mixed porosity throughout
  • Adjust your hair care routine based on your results

Discover Your Hair Type

Hair Porosity Test

Understanding your hair's porosity is the key to effective hair care. Take our simple test to find out your hair type.

Hair Porosity Test Illustration

What is Hair Porosity?

Hair porosity refers to your hair's ability to absorb and retain moisture. It's determined by how open or closed your hair's cuticles are, which affects how well products penetrate your hair shaft.

There are three main porosity levels: low, medium, and high. Each requires different care approaches and product selections to maintain optimal hair health.

Product Guide

Recommended Products by Porosity Type

Choose the right products for your hair's specific needs

For Low Porosity Hair

Shampoos:

  • Lightweight, clarifying shampoos
  • Products with apple cider vinegar
  • Sulfate-free formulas that won't build up

Conditioners:

  • Lightweight, water-based conditioners
  • Heat-activated deep conditioners
  • Products with humectants like honey or glycerin

Styling Products:

  • Lightweight gels and mousses
  • Water-based leave-in conditioners
  • Light oils like grapeseed or sweet almond

Ingredients to Look For:

  • Aloe vera
  • Glycerin
  • Honey
  • Lightweight oils
  • Fruit extracts

For Medium Porosity Hair

Shampoos:

  • Balanced moisture shampoos
  • Gentle cleansers with natural ingredients
  • Sulfate-free formulas

Conditioners:

  • Regular moisture conditioners
  • Occasional protein treatments
  • Balanced deep conditioners

Styling Products:

  • Medium-hold styling products
  • Balanced leave-in conditioners
  • Versatile oils like jojoba or argan

Ingredients to Look For:

  • Panthenol (Pro-Vitamin B5)
  • Jojoba oil
  • Argan oil
  • Shea butter (in moderation)
  • Aloe vera

For High Porosity Hair

Shampoos:

  • Moisturizing, creamy shampoos
  • Sulfate-free, gentle cleansers
  • Products with protein

Conditioners:

  • Rich, intensive conditioners
  • Regular protein treatments
  • Deep conditioning masks

Styling Products:

  • Anti-humectant products for humid weather
  • Heavy creams and butters
  • Heavier oils like castor or olive oil

Ingredients to Look For:

  • Proteins (keratin, silk, wheat)
  • Shea butter
  • Coconut oil
  • Castor oil
  • Aloe vera

Universal Hair Care Tips

For All Hair Types:

  • Use a wide-tooth comb or detangling brush
  • Minimize heat styling when possible
  • Use heat protectants before styling
  • Sleep on a satin or silk pillowcase
  • Protect hair from harsh environmental factors
  • Trim regularly to prevent split ends

Ingredients to Avoid:

  • Harsh sulfates (SLS, SLES)
  • Drying alcohols (ethanol, propanol)
  • Silicones that build up (dimethicone)
  • Mineral oil and petroleum
  • Formaldehyde and formaldehyde-releasing preservatives
  • Synthetic fragrances that can irritate the scalp

FAQ

Frequently Asked Questions

Common questions about hair porosity and care

Can hair porosity change over time?
Yes, hair porosity can change due to various factors including chemical treatments, heat styling, environmental damage, and aging. While your natural porosity is genetically determined, external factors can alter the cuticle structure, changing your hair's porosity level over time.
Can I have different porosity levels throughout my hair?
Absolutely! It's common to have different porosity levels in different areas of your hair. For example, your roots might be low porosity (newer, less damaged hair) while your ends might be high porosity (older, more exposed to damage). This is why customized care for different sections of your hair can be beneficial.
How often should I do protein treatments for high porosity hair?
For high porosity hair, protein treatments are typically recommended every 4-6 weeks. However, this can vary based on your hair's specific needs. If your hair feels overly soft, mushy, or stretchy when wet, it might benefit from more frequent protein. If it feels stiff or brittle, you might need less protein and more moisture.
Why does low porosity hair take so long to dry?
Low porosity hair has tightly closed cuticles that make it difficult for water to both enter and exit the hair shaft. While this hair type resists moisture absorption, once water does penetrate the cuticle (like during washing), it also has difficulty escaping, resulting in longer drying times.
Is the float test reliable for determining hair porosity?
The float test is a popular method but has limitations. Factors like product residue, natural oils, or air trapped in the hair strand can affect results. For more accurate assessment, combine multiple testing methods (float test, spray test, slip test) and observe your hair's general behavior with moisture and products.
Can I change my hair's natural porosity permanently?
Your natural porosity is genetically determined and cannot be permanently changed. However, you can manage and improve the condition of your hair through proper care routines. For high porosity hair, regular protein treatments and moisture-sealing techniques can help. For low porosity hair, proper product application and occasional clarifying can improve moisture absorption.

Ready to transform your hair care routine?Start with understanding your hair's porosity.