But whether it’s blond or pink, doctors advise against dyeing hair for children under 16. “I really don’t think it’s safe to dye or bleach a child’s hair until after puberty, and ideally ...

Once the bleach lightens your hair enough, you can use a hair dye to alter your hair color ... environment for the oxidizing agent to work. Under the alkaline conditions, H2O2 chemically cleaves ...

Over-bleaching the hair will inevitably create brittle, dry hair that breaks easily,” says Zach Mesquit, Wella Professionals ...

then you know how hard it can be to preserve the hair’s blonde or platinum color. (I say “professionally bleached” because many of those at-home dye jobs are probably already yellowish from ...