I understand it's better for the health of the hair to use a lower volume of developer. however as my natural base is a 5 I must leave the 20 vol on much longer than the 30 - is this still a better...
I am trying (without success) to buy Naissant Blond Pearl Shampoo it removes brassiness from highlighted hair. I have tried Amazon but it is permanently out of stock in the UK and the closest is the...
