Home › Cosmetic Science Talk › Formulating › General › Science › hydroquinone SAFETY Science hydroquinone SAFETY Posted by smok on February 28, 2021 at 6:45 pm why hydroquinone safe in usa Unauthorized in europe? ngarayeva001 replied 3 years, 10 months ago 4 Members · 3 Replies 3 Replies MarkBroussard Member February 28, 2021 at 8:19 pm @smok: Different regulations. In the US, Hydroquinone is allowed up to 2% concentration as a prescription drug product. It is not allowed in cosmetic products. OldPerry Member February 28, 2021 at 10:09 pm I don’t believe it is banned in the EU if you have a prescription for it. ngarayeva001 Member February 28, 2021 at 11:15 pm I can confirm you can get 4% hydroquinone from a dermatologist in the UK. Log In to Reply Log in to reply. Public All Members Only Me PublicAll MembersOnly Me Public All Members Only Me Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now