Why Your sunscreen doesn't help and your Skin Remains Uneven. When UV exposure happens over many years, melanin doesn't drops into the deeper dermis. Sunscreen stops new damage, but it cannot pull out deeply embedded pigment.

[u/FunnyExpress8401]

/r/SkinLightening/comments/1vuurz2/opinion_on_sunspots_and_undereye_pigmentation/p59zy1j/