Practical guide to tinted sunscreens

Abstract

To the Editor: Visible light (VL) is known to induce erythema and pigmentation, which has prompted investigations into effective photoprotection against this waveband.1 In addition to UV filters, tinted sunscreens contain iron oxides, and in some, pigmentary titanium dioxide.2 It should be noted that while pigmentary titanium dioxide is listed under “active ingredients” on the label, iron oxides are considered “inactive ingredients” and are listed as such. These ingredients have the ability to scatter and reflect VL photons, imparting VL photoprotection.