Homosalate is a chemical sunscreen ingredient used in cosmetic products to provide UVB protection. UVB rays are a type of ultraviolet radiation from the sun that can cause sunburn and contribute to skin cancer. Homosalate acts as a UVB filter, absorbing and dissipating UVB rays to prevent them from damaging the skin. Here are the cosmetic functions and applications of Homosalate:

1. UVB Protection: Homosalate is specifically designed to protect the skin from UVB rays, which are responsible for sunburn and can play a role in the development of skin cancer.

2. Enhancing Sunscreen Formulations: Homosalate is often combined with other sunscreen ingredients to create broad-spectrum protection. When used in conjunction with UVA filters like Avobenzone or Zinc Oxide, it helps create a sunscreen that shields the skin from both UVA and UVB rays.

1. Sunscreens: Homosalate is a common ingredient in sunscreens, particularly those with SPF values that offer UVB protection. It can be found in various sunscreen formulations, including lotions, creams, gels, sprays, and sticks.

2. Moisturizers with SPF: Some daily moisturizers include added sun protection, and Homosalate may be used in such products to provide UVB protection while keeping the skin moisturized.

3. Makeup Products: Homosalate can also be present in certain makeup products like BB creams or foundations that contain SPF, providing UVB protection alongside coverage.