Cosmetics Formulation Development

I would like to ask as knowledge, see various substances such as Phenylethyl Resorcinol Alpha Arbutin Deoxyarbutin , etc. are said to be effective in whitening Better than Hydroquinone Why is Hydroquinone still used in medical creams or pills? Or is there some mechanism that Hydroquinone is superior?

Hello - Hydroquinone is very cheap compared to สาร whitening other types that members mentioned - because they have a long history of use convince the doctor That it can be effective, of course. - The choice of medication. Usually it depends on the doctor's experience of using that medication. I've used it before with good results. will continue to use