Advice take it or leave it
Here's a friend which I care but she does not take my advice. So I just let it be as she wants to perm her hair and now is not very hair and she is complaining of hot. She waiting her hair to get long so she can have them perm.
She has dandruff problems too and many shampoo she tried not really work for her. I know what I advice usually not one thing she will listen to. Never mind, I just let her be as it is her hair and her life.

