Why Porosity Matters More Than Curl Type in Sri Lanka’s Climate
Most curly hair advice starts with curl type — 2A, 3B, 4C. But two people with the exact same curl pattern can have wildly different results from the exact same product, and porosity is usually why. If you’ve been reaching for the wrong low porosity hair products, you’ll notice it fast: product sits on top of your strands instead of sinking in, and curls end up greasy or flat by noon in Sri Lanka’s heat.
If you’ve ever wondered why a product that’s all over curly-hair forums just doesn’t work on your hair, porosity is usually the missing piece. This guide breaks down how to find your porosity at home, and which Müllwood products suit each type.
What Is Hair Porosity?
Every strand of hair is covered in a cuticle — overlapping scales, similar to roof tiles. How tightly those scales lie determines porosity:
- Low porosity: cuticle scales lie flat and tight. Moisture struggles to get in, but once it’s in, it stays.
- Medium porosity: cuticle scales are moderately loose. Hair absorbs and retains moisture fairly evenly — the easiest type to style.
- High porosity: cuticle scales are lifted or damaged (often from heat styling, colour treatments, or sun and salt exposure). Hair absorbs moisture fast, but loses it just as fast.
How to Test Your Porosity at Home
The float test
Drop a few clean, dry strands of hair into a glass of room-temperature water. Leave it for 2–4 minutes.
- Floats at the top → low porosity
- Sits in the middle → medium porosity
- Sinks to the bottom → high porosity
The slip-and-spray test
Spray a section of dry hair with water. If the water beads up and rolls off before absorbing, that’s low porosity. If it soaks in almost instantly, that’s high porosity.
Humidity and product buildup can skew these tests, so if you’re unsure, go with how your hair actually behaves day to day (see below) rather than a single test result.
Low Porosity Hair Products: What to Use
Low porosity hair resists moisture getting in, which means it’s also prone to product sitting on top of the strand instead of absorbing — this shows up as greasiness, flat curls, or a waxy residue, especially in Sri Lanka’s heat. Choosing the right low porosity hair products comes down to three things:
What works
- Apply products to soaking wet hair, not just damp — this is the window when the cuticle is most open.
- Favour lightweight, water-based formulas over heavy butters and oils.
- Gentle heat (a warm towel or low-heat diffuser) can help the cuticle lift slightly to let product in.
The Lasting Curl Gel is a good fit here — it’s flaxseed and glycerin based rather than built on heavy butters, so it defines curls without the greasy buildup low porosity hair is prone to. Use the Hydrating Hair Mist to refresh rather than reapplying heavier product mid-week.
High Porosity Curls: What to Use
High porosity hair takes moisture in quickly, but it evaporates just as quickly — especially in Sri Lanka’s heat, where damp hair dries fast. This hair type often looks dry, frizzy, and tangled no matter how much product goes on.
What works
- The priority is sealing moisture in, not just adding it — a cream or butter layered under a gel does this better than gel alone.
- Protein-rich treatments occasionally help patch a rough, lifted cuticle, but too much protein makes high porosity hair feel stiff and straw-like, so balance it with moisture-focused products most of the time.
- Cooler water for the final rinse helps the cuticle lie flatter, sealing moisture in before you style.
The Lasting Defining Cream, rich in shea butter and flaxseed, is formulated to hydrate and seal rather than just coat — apply it generously to soaking wet hair before locking it in with the Lasting Curl Gel. This cream-then-gel layering is exactly the Gel & Cream duo.
Medium Porosity Curls: What to Use
If your hair takes most products well and mainly needs upkeep rather than fixing, you’re likely medium porosity. This is the most forgiving porosity type — most of Müllwood’s routine recommendations, including the full Trifecta (cream, gel, and mist), work well as written.
Frequently Asked Questions
Can porosity change over time?
Yes. Heat styling, colour treatments, and sun exposure can raise porosity by damaging the cuticle. There’s no way to permanently lower porosity — the focus is managing it with the right products and gentle handling.
Can I have different porosity in different parts of my hair?
Yes, this is common. Ends are frequently more porous than roots because they’re older and have had more exposure to styling, sun, and handling. If your ends drink up product but your roots stay slick, treat them differently — more product on the ends, less at the roots.
Does porosity affect how long products should sit before rinsing?
For rinse-out treatments, yes — low porosity hair benefits from longer processing time (sometimes with gentle heat) since moisture takes longer to penetrate, while high porosity hair absorbs quickly and doesn’t need as long.
Is porosity the same as curl type?
No. Curl type (2A–4C) describes the shape of the strand; porosity describes how it absorbs moisture. Two people with the same curl type can have completely different porosity, which is why the curl types guide and this porosity guide are best used together.
