Hydroquinone + Tretinoin + Allantoin

This is a combination of three medicines : Hydroquinone, Tretinoin, Allantoin that treat melasma. Hydroquinone is a depigmenting or skin bleaching agent. It produces lightening of your skin by decreasing the number of melanocytes (those specialized cells that make melanin, the pigment in your skin that produces your skin tone) present or produced in your skin. Tretinoin is a form of vitamin A that helps the skin to renew itself more quickly. Allantoin is a skin protectant which works as a moisturizer and relieves minor skin irritations.

Skin peeling, Stinging sensation, Erythema (skin redness), Burning sensation at the site of application