MICROANATOMY

Detailed explanation-1: -UVR causes DNA damage in the epidermis and results in melanin synthesis in melanocytes and transfer to neighboring keratinocytes, leading to increased skin pigmentation within one day after exposure.

Detailed explanation-2: -In most people, UV rays activate a chemical in the skin called melanin. This is the skin’s first defense against the sun. Melanin absorbs the dangerous UV rays that can do serious skin damage. This is the process that gives you a tan.