I went to doctor because my face becoming dark and he saw said you have some pimples but I do not have much I have but first I will give tablets for month and use it he just gave me isotretinoin glotret-20 and isopil-30 to use and biluma cream and episoft moisturizer to use I am using from one week but now my face becoming more dark than before and dry my lips and mouth also become very dry I have ti continue ti use these tablets or I have stop please suggest me.