03/06/2026
Tinted mineral sunscreens and MELASMA.
Most people think SPF only needs to block UV — but melasma is triggered by more than that.
Visible light, especially blue light, directly stimulates melanocytes and increases pigment production. So even when you’re diligent about sunscreen, pigment can continue to worsen if you’re not blocking visible light.
That’s why tinted mineral sunscreen matters. The tint contains iron oxides, which help absorb visible light and reduce melanocyte activation. Studies show that mineral SPF with iron oxides significantly reduces melasma relapse compared to non tinted formulas.
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