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.
Hair Science
The Science Behind Hair Porosity
Understanding the structure of your hair is key to proper hair care
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
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
The Float Test
- Take a clean glass and fill it with room temperature water
- Take a clean strand of hair (one that has naturally fallen out)
- Place the strand on the surface of the water
- 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
- Make sure your hair is clean and completely dry
- Take a section of your hair and spray it with water
- Observe how the water interacts with your hair
- 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
- Take a clean strand of hair between your fingers
- Slide your fingers up the strand toward the scalp
- Pay attention to how the strand feels
- 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.

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.