Oregon Esthetician State Board

What are lakes in the context of cosmetic ingredients?

1. A type of chemical preservative

2. Insoluble pigments made from dye and inorganic materials

3. A natural extract used for skin calming

4. Moisturizers derived from plants

The correct answer is: Insoluble pigments made from dye and inorganic materials

In the context of cosmetic ingredients, lakes refer to insoluble pigments that are created by combining dyes with inorganic materials, such as aluminum or calcium salts. This process results in a stable colorant that can be used in a variety of cosmetic products to impart vibrant colors. Lakes are particularly valued in cosmetics because their insolubility ensures that they do not leach or dissolve into formulations, allowing for long-lasting color without changing over time. The use of lakes allows formulators to achieve specific hues and intensities while maintaining product stability, which is vital for ensuring the quality and longevity of makeup and other beauty items. Their ability to remain suspended in the formulation without bleeding into other ingredients makes them an essential choice for many product types.