I'm not quite sure this belongs in here because it most certainly is not beautiful or stylish but I thought the knowledge base would be here.
I'm planning on hanging about hairdressers tomorrow as DS wants a 'Foden Trim' from what I understand some weird short bowl cut...anyway they won't be able to bleach it as no time for a patch test...so what do I need to bleach his hair at home? Most importantly what do I need that I can purchase from Tesco or at a push Boots.
Tldr: how do I/what do I use to bleach hair?