The Role of Sunscreen in Melasma and Postinflammatory Hyperpigmentation

Area of Science:

• Dermatology
• Photoprotection
• Pigmentary Disorders

Background:

• Photosensitive conditions like melasma and postinflammatory hyperpigmentation (PIH) worsen with UV and visible light exposure.
• Sunscreen is vital for managing these conditions, particularly for skin of color patients who underutilize photoprotection.

Purpose of the Study:

• To review existing literature and provide evidence supporting sunscreen use in melasma and PIH treatment.
• To assess the efficacy of broad-spectrum sunscreens in managing pigmentary disorders in diverse skin tones.

Main Methods:

• A systematic review of English articles from PubMed, Journals@Ovid Full Text, and Embase.
• Search terms included "sunscreen" combined with "melasma," "PIH," or "post-inflammatory hyperpigmentation."
• Analysis of nine relevant publications.

Main Results:

• Evidence supports broad-spectrum sunscreens (UVA, UVB, visible light) as an adjuvant therapy for melasma and PIH.
• Sunscreen use stabilizes and improves pigmentary disorders in skin of color.
• Identified advantages, limitations, and practice gaps in photoprotection for these patients.

Conclusions:

• Broad-spectrum sunscreen is an essential adjunctive treatment for melasma and PIH, particularly in skin of color.
• Further research and improved photoprotection practices are needed for patients with pigmentary disorders.
• Sunscreen plays a key role in managing light-exacerbated dermatologic conditions.