Why Is Skin Pigmentation More Common In Hot Weather? Summer is the season when many people notice dark patches, tanning, uneven skin tone, and dullness on their skin. If you are wondering, Why Does Skin Pigmentation Increase in Summer?, the main reason is increased exposure to harmful UV rays from https://www.tumblr.com/wellnesswisehealthcare/817784721983586304/why-does-skin-pigmentation-increase-in-summer?source=share