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What Is Low Porosity Hair?
Low porosity hair is hair that has tightly closed hair cuticles. Our hair cuticle is often compared to a pinecone (closed for low porosity, open for high porosity). Another analogy for the hair cuticle is a shingled roof, with a newly made roof being low porosity, and a roof with some raised/curling shingles and/or missing shingles being high porosity.
Having a tight, closed cuticle means that once water gets into your hair strand, it’s likely to stay nice and hydrated as the tight cuticle will be great at holding water in your hair. It may be harder for water and hair product ingredients to get into your hair though. For this reason, some with low porosity hair struggle with dry hair while others with low porosity hair struggle with over-moisturized hair.
If you have low porosity hair and aren’t successful at getting water and products into your hair strands, it can become dry. If you have low porosity hair and are successful at getting water and products into your hair strands, it can become over-moisturized.