What it is
Phenylpropanol is a small aromatic alcohol that combines a mild floral, hyacinth-like odor with antimicrobial activity. In sunscreens and skincare it is frequently used as part of preservative-boosting or self-preserving systems, helping to keep formulas stable, while also contributing to or masking the product scent. It is often paired with other glycols and aromatic alcohols for broad-spectrum protection against microbial growth.
Safety & warnings
As an aromatic alcohol with a characteristic odor, phenylpropanol can contribute to a product's fragrance and may be a consideration for fragrance-sensitive users. At the low levels used in finished cosmetics it is generally well tolerated.
Origin & sourcing
Synthetic. It is a defined aromatic alcohol manufactured for cosmetic use; the same molecule also occurs naturally in some plant materials.
Questions everyone asks
Why is phenylpropanol added to sunscreen?
It is used mainly to boost the preservative system and help keep the formula free of microbial growth, while also lending a mild pleasant scent.
Is phenylpropanol a fragrance ingredient?
It can function as one. It has a soft floral odor and may contribute to or mask the product's scent in addition to its preservative role.