I have bought hydrogen peroxide to lighten my side fringes. Since I havenât used peroxide on my hair before, I want to know a few things from someone who has used it quite normally. The pack mentions that the volume of peroxide is 40vol. Do you think it is the appropriate quantity as my mom bought it for me? Moreover, since the natural color of my hair is dark brown, for how much time do you think I should leave it on my hair? The pack mentioned 15-20 minutes, and I do not intend to use it twice in one go, as I think it would damage my hair! Therefore, please advice appropriately! Thanks.
