I am having black marks completely on my forehead when exposed in sunlight it mismatch with the face. So please give me some advice.

Question

Typically, the skin darkens when exposed to sunlight because it produces a substance, called melanin, to protect itself from the harmful solar radiation. Its advisable to use sunscreen every time you go outside. You can try creams and soaps that contain kojic acid, mulberry extract, and Vitamins C, E, and B3.
You can also go for lightening creams containing hydroquinone, but make sure that the concentration does not exceed to 2%.
Its best to consult your dermatologist to find out which of these options is best for your skin type.

Sandesh Gupta · Accepted Answer

Typically, the skin darkens when exposed to sunlight because it produces a substance, called melanin, to protect itself from the harmful solar radiation. Its advisable to use sunscreen every time you go outside. You can try creams and soaps that contain kojic acid, mulberry extract, and Vitamins C, E, and B3.
You can also go for lightening creams containing hydroquinone, but make sure that the concentration does not exceed to 2%.
Its best to consult your dermatologist to find out which of these options is best for your skin type.