Tinted sunscreens have been found to reduce relapses of melasma more than non-tinted, broad-spectrum sunscreens. Tinted sunscreens have also been shown to reduce hyperpigmentation, both on the skin surface and under a microscope. Iron oxide, in particular, appears to be particularly effective at blocking blue light.

Does tinted sunscreen protect against blue light?

"Most sunscreens, unfortunately, do not help protect against blue light, but this is why I specifically recommend sunscreen with iron oxide, which does protect against visible light," explains Tan. ... SeneGence's new lightweight serum protects your skin against visible signs of aging related to blue light.

What sunscreen ingredient protects against blue light?

Zinc Oxide or Iron Oxide found in mineral sunscreens work as a protective barrier as they reflect, scatter, and physically block light. Iron oxides provide enhanced protection against HEV or blue light, especially when combined with zinc oxide, according to results of a new study in The Journal of Cosmetic Dermatology.