Hi Dear DR,I am 52 year old my melasma after laser get worse and now i am use hydroquinone ,koiic Acid,Tretinoin Betamethasone ,aqeuous cream .My face get light but i can see the patch still on my face,theses hydroquinone cant lighter complate with melasma but only can tell my skin get to much white and the melasma destn t complate gone..what can i do it very worried my lot,Dr can you help me please.