Question

treatment for face patches​

Answer 1

Laser therapy: Intense pulsed light devices and Q-switched lasers are commonly used to help lighten skin areas that have darkened.

Topical creams: Topical hydroquinone or prescription retinol (vitamin A) cream may help decrease the appearance of dark skin patches.
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Answer 2

Melasma causes patches of discoloration. The patches are darker than your usual skin color. It typically occurs on the face and is symmetrical, with matching marks on both sides of the face. Other areas of your body that are often exposed to sun can also develop melasma