Film-Forming Polymers:
* Nitrocellulose: The primary ingredient, forming the base of the film that dries on your nail. It's a flexible, transparent polymer that creates a strong, durable finish.
* Tosylamide-Formaldehyde Resin (Tosylamide-Formaldehyde): This resin helps to bind the nitrocellulose molecules together, improving the film's strength and durability.
Solvents:
* Ethyl Acetate: A solvent that dissolves the polymers and allows for easy application. It evaporates quickly, leaving the polymer film behind.
* Butyl Acetate: Another solvent, similar to ethyl acetate, but evaporating more slowly. This helps to create a smoother film and prevent streaks.
* Isopropyl Alcohol: A solvent that helps with blending and spreading the polish.
Pigments and Additives:
* Pigments: The colorful components that provide the desired shade. They can be organic (from plants or animals) or inorganic (minerals).
* Pearlescent Pigments: Provide shimmer and shine by reflecting light differently. These are often made from mica or other mineral flakes.
* Plasticizers: Increase the flexibility of the film, making it less brittle and more chip-resistant.
* Resins: Enhance adhesion, gloss, and durability.
* UV Absorbers: Protect the polish from fading and discoloration caused by ultraviolet radiation.
* Thickeners: Help to control the flow and consistency of the polish.
* Antioxidants: Protect the polish from oxidation and prevent it from changing color or thickening.
Additional Notes:
* Formaldehyde: Although it's a controversial ingredient, it's present in many nail polishes as a preservative. Formaldehyde-free options are available, but they may not have the same longevity.
* Camphor: Used in some nail polishes to improve the drying time.
* Toluene: A solvent that can be harsh on the nails. It's being phased out of many nail polishes due to safety concerns.
The specific ingredients and their proportions can vary depending on the brand, color, and type of nail polish (e.g., regular, gel, or quick-drying).