SPF Scout · Ingredient
PEG-9
CAS 3386-18-3
What this ingredient generally does
PEG-9 draws in and holds moisture and works as a solvent. That means it helps keep the product from drying out and dissolves other ingredients so they blend evenly.
Reviewed before publication. This note describes function in a formulation — nothing else.
Published formulations that list this ingredient
These are the formulations currently published in the SPF Scout catalog whose stored ingredient declaration includes this ingredient. It is not a list of every product on the market, and the order carries no meaning.
La Roche-Posay La Roche Posay Laboratoire Dermatologique
U.S. formulation
La Roche-Posay La Roche Posay Laboratoire Dermatologique Anthelios 50 Mineral Ultra Light Broad Spectrum SPF 50 Sunscreen
SPF 50 as labeled · U.S. formulation
La Roche-Posay La Roche Posay Laboratoire Dermatologique Anthelios 50 Tinted Mineral Face Broad Spectrum SPF 50 Sunscreen
SPF 50 as labeled · U.S. formulation
La Roche-Posay La Roche Posay Laboratoire Dermatologique Anthelios 50 Tinted Mineral Sunscreen Broad Spectrum SPF 50
SPF 50 as labeled · U.S. formulation
Checking this against your own list
You can select this ingredient in the SPF Scout app as one to flag. The app compares your selections against a product's stored declaration on your device; your list never reaches this website.
This comparison does not predict whether your skin will react.
Where this information comes from
Ingredient names, CAS numbers and recorded functions come from SPF Scout’s curated ingredient dictionary, grounded in CosIng, the European Commission’s Cosmetic Ingredient Database. Content © European Union, reused with acknowledgement.