Hair Porosity Test
Find your hair type in 60 seconds
Answer 5 quick questions to find your hair's porosity type.
What is hair porosity?
Hair porosity describes how easily your hair absorbs and holds moisture. It comes down to your cuticle — the outer layer of overlapping scales on every strand. When those scales lie flat and tight, water has a hard time getting in (low porosity). When they’re raised or have gaps, moisture rushes in and out (high porosity). Knowing yours is the single fastest way to stop guessing which products actually work for you.
How to test your hair porosity at home
You don’t need anything fancy — just clean hair and a few minutes. Try any of these three:
1. The water (float) test
Drop a single clean, dry strand into a glass of room-temperature water and wait 2–4 minutes. If it floats on top, your hair is low porosity. If it drifts to the middle, you’re medium. If it sinks to the bottom, that’s high porosity.
2. The spray-bottle test
Mist a small section of dry hair with water. If droplets bead up and roll off, the cuticle is closed (low). If they soak in quickly, it’s open (high). Somewhere in between means medium.
3. The slide test
Run your fingers up a strand toward the roots. Smooth the whole way = low porosity; bumpy and rough = high porosity. It’s the quickest check when you’re away from a sink.
What your result means
Low porosity
Your hair’s cuticle layer is tightly closed, so water and products struggle to get in — but once moisture is there, it stays. The trick is helping things absorb instead of sitting on top. Use lightweight, watery products (gels, milks) over heavy butters, add gentle warmth (warm water or a warm towel opens the cuticle), and apply products to damp, not soaking-wet, hair.
Medium porosity
Lucky you — your cuticle lets the right amount of moisture in and keeps it there. Hair styles easily and takes color predictably. The goal is simply not to over-process it. Keep a simple wash → condition → protect routine, a light weekly mask is plenty, and use a heat protectant so you stay in this happy zone.
High porosity
Your cuticle has gaps or lifts (often from heat or coloring), so hair drinks up moisture quickly but can’t hold it — which can read as dry, frizzy, or thirsty ends. The mission: seal moisture in. Layer a leave-in, then a cream or oil to lock it down. Always use a heat protectant and style on cooler settings. Handle gently when wet — that’s when strands are weakest.
How to care for your hair type
Whatever your porosity, the recipe is the same three steps: gentle cleansing, lightweight layering, and sealing moisture rather than stripping it. In our Online Hairstyling Course for Teens, Ksenia walks through washing, drying, and styling for each porosity type with step-by-step video — built for girls 11–17, learn-at-home, $15 with lifetime access.
Frequently asked questions
How do I test my hair porosity at home?
The quickest method is the float test: drop a clean, dry strand into a glass of water and wait 2–4 minutes. If it floats, you're low porosity; if it hovers in the middle, medium; if it sinks, high. The quiz above combines this with how your hair behaves day to day for a more reliable read.
Can I change my hair porosity?
Genetics set your baseline, but damage from heat and coloring raises porosity over time. You can't undo that fully, but gentle care, heat protectant, and sealing products keep porosity from climbing and make any type look healthier.
Is high porosity bad?
Not at all — it's just a hair type, not a flaw. High-porosity hair simply needs moisture sealed in with leave-ins and creams. Once you adjust the routine, it behaves beautifully.
Is this quiz okay for teens?
Yes — it is written for girls ages 11–17 and uses only safe, at-home observations. No products or chemicals required. For the full guide and routine, we send results to a parent or guardian’s email.