Hair porosity is a marker of how great your hair is at absorbing foreign substances like products, oils, and moisture. Low hair porosity means that your mane doesn’t allow for easy absorption into your hair shaft. High porosity means products and formulas can seep in like a margarita on a hot afternoon. For this reason, you need to tailor your products to your hair porosity. Here is a rundown of what you should and shouldn’t be buying for different hair porosities.
High Porosity: Heavy Serums + Oils
If you have high porosity hair, you will instantly know it. Even water has a hard time making it into your hair shaft. If it takes a good while before your hair is drenched when you enter the shower or dip in the pool, it’s safe to assume you have high porosity. The structure in your strands doesn’t allow moisture to easily be absorbed. In fact, your hair can repel moisture, creating styling and frizz problems.
This type of hair needs heavy serums and oils. It’s also best dried with a diffuser in order to help keep curl integrity. In order to not have products sit at the surface, try to apply when your hair is warm. This can be right out of a warm shower or after blowdrying. Warm temperatures make the shaft more receptive to taking in products. You also don’t want any products with residue, skip anything with silicones and glycerin.
Medium Porosity: Avoid Silicones + Heavy Oils
This category of hair might be the holy grail. It doesn’t get weighed down like its low porosity sister, but it also doesn’t repel moisture quite like high porosity hair does. It’s a Goldilocks of sorts, if you will.
Medium porosity hair can take almost any product out there. Nevertheless, experimentation is key for this category as medium porosity hair can act differently depending on what part of the spectrum you find yourself in. Avoiding products with silicones is a good strategy and also stay away from ultra-heavy oils as they will give your hair a greasy appearance.
Low Porosity: Look For Light Weight Products
Low porosity hair is a ninja. It can pick up any formula you put on it in an instant. It can also be easily styled. If this all sounds too good to be true, it is. Low porosity hair also runs the highest risk for damage and it can show wear and tear more visibly.
Low porosity hair does best with light products that won’t weigh it down. Thick serums and heavy oils are best left for high porosity hair. Although considered more fragile, the absorption rate for low porosity hair is greater so wearers can take advantage of leave-in masks and treatments in a fraction of the time. Opt for regular shampoos because this hair can accumulate buildup easily.
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