Development of a semi-permanent mascara technology.

Area of Science:

• Cosmetic Science
• Materials Science
• Ophthalmology

Background:

• Consumers desire long-lasting mascara benefits, including length and fullness, beyond a single day.
• Existing multi-day lash products are limited to lash darkening (dyes) or lack durability (waterproof mascaras).
• Current mascaras often fail to maintain initial aesthetic appeal over extended wear periods.

Purpose of the Study:

• To develop a novel semi-permanent mascara formulation offering extended wear.
• To achieve mascara benefits such as length, darkness, and fullness for multiple days.
• To create a product resistant to abrasion, flexibility, and insoluble in soap and water.

Main Methods:

• Formulation of a new semi-permanent mascara utilizing rosinate polymers.
• Application of principles from paint industry for durable film formation.
• Analysis using Cryo-Scanning Electron Microscopy (Cryo-SEM), stretch tests, rub tests, and a multi-day consumer study with daily imaging.

Main Results:

• The new formulation forms a continuous polymer film on eyelashes, distinct from current products (Cryo-SEM).
• Demonstrated superior flexibility and abrasion resistance compared to existing mascaras (stretch and rub tests).
• Consumer studies confirmed superior wear performance in real-world usage conditions.

Conclusions:

• The developed semi-permanent mascara technology successfully provides multi-day beauty benefits.
• Rosinante polymers enable a unique combination of flexibility, durability, and resistance to removal.
• This innovation addresses the unmet need for mascaras that maintain their initial look for extended periods.