Homosalate is a chemical sunscreen ingredient that helps protect the skin from the sun's ultraviolet (UV) rays. It absorbs UVB rays specifically, which are the main cause of sunburn. Homosalate is often used in combination with other sunscreen ingredients to provide broad-spectrum protection against both UVA and UVB rays. Homosalate is an oil-soluble ingredient that can be easily incorporated into skin care and cosmetic products. It is a well-tolerated and non-irritating ingredient and can be found in many sunscreens, moisturizers and other skin care products. It also helps to prevent skin aging and other sun-related skin issues.