I have hyperpigmentation on my upper arms from last 1 2 years and it's getting darker with time . A dermatologist recommended me these products to use twice a day ( I am using these from last 3 weeks) 3. Ilumax skin brightening cream . 2.Epilite 5 % hydroquinone solution. 1.Percos clobestasol propionate and salicyclid acid lotion (1,2,3 is order of application) But after using these twice my skin has become irritated & dry . Please let me know if will these products be effective ? Or should I stop using these as I have heard that topical treatments aren't effective for curing hyperpigmentation and you have to undergo laser treatments for the same .