WHAT ARE HYPERPIGMENTATION?
"When there's dark discoloration on the skin, too much melanin has been produced," says Jaliman. Factors like the UVA rays in sunshine "turn on" your pigment-making cells called melanocytes, which then pump out melanin to protect your skin. While that means a tan for many, the process can also cause dark spots and patches to crop up in over-exposed areas. Sometimes, spots can take a decade or two to show up, so if you've got hyperpigmentation making an appearance now, the damage may actually have come from your child or teen years.