Fragrance in Dermatology: Revisiting Sensitization and Clinical Use

Area of Science:

• Dermatology
• Cosmetic Science
• Toxicology

Background:

• Fragrance is a common ingredient in consumer products, valued culturally and personally.
• In dermatology, fragrance is primarily viewed as a risk due to allergic contact dermatitis (ACD) and irritation.
• Current recommendations often advise fragrance avoidance for sensitive skin conditions.

Purpose of the Study:

• To re-evaluate the traditional paradigm of fragrance avoidance in dermatologic care.
• To explore recent advancements in fragrance formulation, risk assessment, and regulatory standards.
• To consider the emerging role of scent in patient experience and the skin-brain axis.

Main Methods:

• Narrative review of historical fragrance avoidance practices.
• Analysis of recent developments in exposure-based risk assessment and formulation science.
• Examination of industry standards (e.g., International Fragrance Association) and neurocosmetic research.

Main Results:

• Traditional avoidance may oversimplify sensitization risks.
• Quantitative frameworks and industry standards offer a more nuanced understanding of fragrance safety.
• Neurocosmetics reveal potential benefits of olfactory signaling via the skin-brain axis.

Conclusions:

• A shift from universal fragrance avoidance towards an individualized approach is supported.
• Advances in formulation and risk assessment enable a more balanced perspective on fragrance use.
• Considering the skin-brain axis opens new avenues for fragrance's role in dermatologic well-being.