Guanine

1. Definition Guanine:

Guanine is a naturally occurring compound that is found in the DNA and RNA of living organisms. In cosmetics, guanine is often extracted from fish scales and used as a pearlescent agent to add shimmer and shine to various beauty products.

2. Use:

Guanine is commonly used in cosmetics for its light-reflecting properties, making it a popular ingredient in products such as eyeshadows, nail polishes, and highlighters. It provides a subtle, iridescent glow that enhances the overall appearance of the skin and adds a luminous finish to makeup looks.

3. Usage Guanine:

When using cosmetics containing guanine, it is important to take precautions to avoid any potential irritation or allergic reactions. It is recommended to perform a patch test on a small area of skin before applying the product to the face or body. Additionally, individuals with sensitive skin may want to consult with a dermatologist before incorporating guanine-based products into their skincare routine.

4. References:

- Kaur, I. P., & Kapila, M. (2007). Applications of inorganic nanoparticles in cosmetics. Journal of cosmetic dermatology, 6(3), 191-194.

- Goh, C. F., & Ng, S. P. (2019). Guanine-based nanomaterials for biosensing and bioimaging. Trends in analytical chemistry, 118, 493-502.

- Alaluf, S., Heinrich, U., Stahl, W., Tronnier, H., & Wiseman, S. (2002). Dietary carotenoids contribute to normal human skin color and UV photosensitivity. Journal of nutrition, 132(3), 399-403.