Anal bleaching?

So I'm thinking about anal bleaching. There's literally no over the counter products in the UK so I'm going to have to order online. Does anyone have any experiences doing it at home or have any advice on products to buy or reliable websites? Or any horror stories or anything really? I'm in two minds weather to bother but I'm fairly olive skinned and I'm paranoid about it! (FYI I'm in lovely relationship it's me wanting to do it not my partner)