Internal structure changes of eyelash induced by eye makeup

Area of Science:

• Dermatology
• Materials Science
• Microscopy

Background:

• Eyelash structure is crucial for facial aesthetics and protection.
• The impact of cosmetic products on eyelash integrity is not fully understood.

Purpose of the Study:

• To investigate the effects of eye makeup usage on the internal structure of human eyelashes.
• To determine if mascara and eyelash curler use correlate with structural changes.

Main Methods:

• Scanning X-ray microscopic tomography with synchrotron radiation was employed.
• Eyelash samples from 36 Japanese women (aged 20-70) with varying makeup habits were analyzed.
• Cross-sectional images were reconstructed to assess eyelash structure.

Main Results:

• Eyelash structure was found to be similar to scalp hair.
• Increased mascara use correlated positively with cuticle cracking.
• Higher frequency of mascara use also correlated with increased cortical porosity.
• Eyelash curler use did not yield statistically significant structural changes.

Conclusions:

• Frequent mascara application can lead to structural damage in eyelashes, including cuticle cracking and cortical porosity.
• The findings highlight the potential detrimental effects of specific eye makeup products on eyelash health.
• Further research could explore protective measures or alternative formulations.