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Related Experiment Videos

Nail cosmetics: allergies and irritations.

Robert Baran1

  • 1Nail Disease Center, 42 rue des Serbes, Cannes 04600, France. baran.r@club-internet.fr

American Journal of Clinical Dermatology
|October 3, 2002
PubMed
Summary

Adverse reactions to nail cosmetics can occur at the application site or elsewhere. Different nail coatings, including nail enamels and polymerizing gels, present varying risks for allergic and irritant contact dermatitis.

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Area of Science:

  • Dermatology
  • Cosmetic Science
  • Toxicology

Background:

  • Adverse reactions to nail care products are common but precise figures are lacking.
  • Reactions can manifest at the nail site or as ectopic reactions on other skin areas.
  • Nail coatings include evaporative (nail enamel) and polymerizing (gels, acrylics) types.

Purpose of the Study:

  • To categorize and differentiate adverse reactions associated with nail cosmetic procedures.
  • To compare the types and frequencies of reactions between different nail coating technologies.
  • To highlight potential risks associated with specific nail product ingredients like formaldehyde.

Main Methods:

  • Utilized a test battery to distinguish between allergic and irritant contact dermatitis.
  • Categorized reactions based on location: nail site vs. ectopic.
  • Reviewed the composition and application methods of various nail hardeners and coatings.

Main Results:

  • Distant allergic contact dermatitis is more common with nail enamels than polymerizing coatings.
  • Polymerizing nail coatings are more frequently associated with reactions directly in the nail area.
  • Nail hardeners may contain formaldehyde, necessitating cautious interpretation of patch test results.

Conclusions:

  • Nail cosmetic products can cause diverse adverse reactions, varying by coating type.
  • Understanding the differences between nail enamels and polymerizing coatings is crucial for risk assessment.
  • Formaldehyde in some nail products requires careful handling and diagnostic interpretation.

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