My hairdresser told me I was overusing protein on my hair, and that it needed moisture. She told me the signs, and I immediately forgot them, just as I always forget what my blood type is. She told me about the ‘hair in a glass of water test’ and I forgot that too. I have never gone deeply into it, and if my hair feels overloaded or flat, I generally just change shampoo.
I looked the water glass test up today, though, and this is what I found. 
