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Have you ever noticed that wet hair is heavier than dry hair? Why is that? The outer layer of your hair, the cuticle, is made up of tightly over lapping scales for strength and resistance. And then there is the sebum, or the natural oil, that coats the scaly cuticle. Despite these 2 defenses, your hair still absorbs water. In fact healthy hair can absorb more than 30% of its own weight of water. Damaged hair is even more permeable - it can absorb up to 45% of its own weight of water. When the hair shaft is fully saturated, its diameter increases by 15 - 20% and it stretches or gets longer.
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Nadine Visscher has been cutting hair for over 20 years. She is the author of haircutting ebooks and has an great selection of both haircut videos and haircutting scissors.
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