Cos de Baha - Szethy review for 2% Hydroquinone + Azelaic Acid 4% + Niacinamide 4% Serum

I have to say, that i was afraid to using it - but its not that strong!! So dont be afraid. After 1,5-2 month i can clearly started to see results. (I have some strong melasma and shes a b…tch.) But i wanted to try hydroquinone - and i didnt regret!