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Homosalate

Description

Homosalate is a widely used organic compound in sunscreen formulations, functioning as an effective UVB filter. This oil-soluble ingredient absorbs ultraviolet radiation in the 295-315 nm range, providing crucial protection against sunburn and DNA damage. Chemically, homosalate is a salicylate ester, structurally related to salicylic acid but with distinct properties optimized for sun protection.

In sunscreen products, homosalate typically comprises 1-15% of the formulation, often working synergistically with other UV filters for broad-spectrum coverage. Its popularity stems from its stability, efficacy, and ability to enhance the water resistance of sunscreen formulations. Homosalate also exhibits mild antioxidant properties, potentially offering additional skin benefits.

Safety assessments by regulatory bodies have deemed homosalate safe for use in cosmetic products at current concentrations. However, some studies suggest it may have weak estrogenic effects, prompting ongoing research. Environmental concerns have also been raised due to its potential impact on aquatic ecosystems.

When formulating with homosalate, care must be taken to ensure proper solubilization and compatibility with other ingredients to maximize its sun protection efficacy while maintaining product stability and sensory appeal.