Try e-bay uk for some glycolic acid.
I ordered some recently; haven't started using it yet, as I haven't yet got some baking soda for neutraliser.
Anya, does the skin always go red for some days, or is this only if you use a high percentage and keep it on there for too long? I have got the 30% glycolic acid and they suggest keeping it on there for 2-3 minutes the first time, and increasing it by 1 minute every week.
The above is only my Personal Humble Opinion, Folks.
I am no expert on these matters. Please consult the (supposed) experts, and seek the advice of other people as well.