HI, THANKS FOR CHOOSING HCM, melacare contains hydroquinone,tretinoin and mometasone so it helps in improvement in fairness by peeling the skin yes ,on stopping the cream the skin turns more darker due to its steroid content not only that ,peeling of skin results in dryness ,and the budding skin underneath it is more sensitive so when exposed to sun and pollution the side effects lasts longer melacare should be applied only at night and you need to use a better sunscreen in day time application of moisturiser may also be required coming to deriva ,it is a topical retinoid cream,it is good for acne but has side effects like allergy,more sensitivity of skin,dryness and scaling initially you may also have more acne despite using the cream so go to your doctor, get your skin checked ....think twice and talk to the doctor before you use any cream because you mentioned you have skin allergy too hope i answered your query feel free to contact me for further queries thank you