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June 20, 2026Photodermatology Photoimmunology & Photomedicine

Enhancing Photoprotection: Assessing Visible Light Photoprotection in Tinted Inorganic Sunscreens

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Authors

EREduardo RuvoloSMSusan MortilloOYOmid Yousefian

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Overview

Randomized trial assesses erythema and pigmentation outcomes from a novel tinted sunscreen with antioxidants.

Key Points

  • This study aims to evaluate the photoprotection properties of a novel Zn-based tinted sunscreen against visible light and UVA1-induced effects in diverse skin tones.
  • Enrolled 12 healthy adults with Fitzpatrick skin types IV-VI.
  • Compared a novel Zn/Fe2O3/5 AOX sunscreen with commercially available tinted and non-tinted sunscreens.
  • Erythema and pigmentation assessed using diffused reflectance spectroscopy, polarized photography, and scoring immediately, 24h, and 7 days post-irradiation.
  • Novel Zn/Fe2O3/5 AOX sunscreen significantly reduced immediate erythema (p < 0.05) compared to ZnO only.
  • Delayed pigmentation was also reduced with the new formulation (p < 0.05).
  • Not all tested mineral formulas effectively reduced erythema and pigmentation like the ZnO-only formula.

Cite This Study

Ruvolo et al. (2026) studied this question.

synapsesocial.com/papers/6a3630f5db0793dc1a53804ahttps://doi.org/10.1111/phpp.70104
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1AN EXPERIMENTAL STUDY OF THE CHANGES IN PIGMENTATION IN HUMAN SKIN IN VIVO WITH VISIBLE AND NEAR INFRARED LIGHT1984 · 78 citations
  2. 2Impact of Iron-Oxide Containing Formulations Against Visible Light-Induced Skin Pigmentation in Skin of Color Individuals2020 · 81 citations
  3. 3Photoprotection beyond Ultraviolet Radiation – Effective Sun Protection Has to Include Protection against Infrared A Radiation-Induced Skin Damage2010 · 91 citations
  4. 4Melasma, a photoaging disorder2017 · 317 citations
  5. 5ACUTE EFFECTS OF NEAR ULTRAVIOLET AND VISIBLE LIGHT ON THE CUTANEOUS ANTIOXIDANT DEFENSE SYSTEM1989 · 142 citations