Ever wondered why an oil that transforms your friend’s hair does almost nothing for yours? The answer is usually porosity. It is one of the most useful things you can learn about your hair, and almost nobody teaches it.
Porosity is simply how easily your hair takes in and holds on to moisture. Once you know yours, shopping for products stops being a guessing game.
The three porosity types
Match the richness of your products to your type.
| Question | Type | How it behaves |
|---|---|---|
| Low | Cuticles lie flat and tight | Slow to get wet and dry; loves light, warm oils |
| Medium | Relaxed and balanced | Easy-going; most routines work |
| High | Cuticles more open | Drinks and loses moisture fast; loves sealing creams |
What porosity actually means
Every strand of hair has an outer layer called the cuticle. Picture roof tiles lying over each other. How tightly or loosely those tiles sit decides how water and product move in and out of the hair. That is porosity.
It is mostly down to your natural hair and how it has been treated over the years. Once you know your type, you can work with your hair instead of fighting it.
The easy at-home porosity test
You need a glass of water and one clean strand of hair. Take a strand of freshly washed hair, with no product on it, and drop it into the glass.
Watch for a couple of minutes. Floats on top means low porosity. Hovers in the middle means medium. Sinks to the bottom means high porosity.
How to care for each type
Low porosity: warmth is your friend. Apply a lighter oil like Hair Growth Oil to warm, damp hair, cleanse gently so product does not build up, and keep leave-ins light.
Medium porosity: most routines work. Condition regularly and enjoy the occasional Protein Hair Pack for bounce.
High porosity: seal it in. Smooth the Jasmine Hair Butter through damp mid-lengths and ends, use a weekly pack, and finish with a little butter to tame frizz.
A simple routine that works for everyone
Whatever your porosity, three habits keep hair looking its best. Oil before you wash, cleanse gently, and seal the ends with the right-weight leave-in.
Adjust the richness to your porosity and you are set.
FAQ
Can my hair porosity change?
Your natural porosity is fairly stable. Styling and heat over the years can open the cuticle, but gentle care and regular conditioning keep it in great shape.
Is low or high porosity better?
Neither. They are just different. Each has an easy routine that makes it look and feel wonderful once you know the trick.
What products suit high-porosity hair best?
Rich, sealing leave-ins like a hair butter, plus regular conditioning packs. The goal is to lock moisture in.
Why does my hair take so long to dry?
That is a classic low-porosity sign. The tight cuticle that keeps water out also keeps it in, so drying takes longer. Warm-applied products help.
Sources and further reading
Browse all products for Hair Fall & Scalp.
Published July 2026. Last checked . We compare product details with the current pack and keep source links beside the claims they support. About VEETREE · Editorial Policy.
This guide covers cosmetic care, not diagnosis or treatment. Speak with a qualified clinician when symptoms are severe, persistent or getting worse.
