01/17/2026
Melasma isn’t just triggered by the sun — it’s triggered by visible light.
That means SPF alone isn’t enough.
The Facts:
☀️ Iron oxides protect against visible light, especially blue light — standard (non-tinted) sunscreens do not.
☀️ Tinted sunscreens with iron oxides help prevent melasma from worsening and reduce rebound pigmentation
☀️ Pairing iron oxides with broad-spectrum SPF 30+ offers more complete protection
☀️ Daily use matters, even indoors or on cloudy days as visible light penetrates windows
Bottom line:
For melasma and hyperpigmentation, iron oxide–tinted sunscreen isn’t optional — it’s best practice.
✨ Pro tip: This is why we recommend tinted mineral sunscreens like Alastin Hydratint for pigment-prone skin. It’s our go to, day and night
