Hi? i have been struggling with acne due to pregnancy, iwas told it will clear after pregnancy,my baby is now seven months but im still fighting it.It made me dark,i have used acne kit from peter thomas roth products with AHA/BHA,SALICYLIC 2% ACIDGLYCOLICACID 10% For one month then i was asked to stop a normal moisturerizer and clenzer,can i use hdroquinon, they have hydroquinon free is it safe?