SPF Scout · Ingredient
Phosphoric Acid
CAS 7664-38-2
What this ingredient generally does
This is a buffering agent, meaning it adjusts and steadies the product's acidity level. In practice it helps keep the formula's pH consistent.
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.
EltaMD EltaMD UV Clear Blemish-Prone and Oil Balancing
U.S. formulation
EltaMD EltaMD UV Daily Hydration
U.S. formulation
EltaMD EltaMD UV Physical Rosy Tint SPF40
SPF 40 as labeled · U.S. formulation
EltaMD EltaMD UV Physical SPF41
SPF 41 as labeled · U.S. formulation
EltaMD EltaMD UV Physical SPF41 (Cream)
SPF 41 as labeled · U.S. formulation
Tatcha TATCHA THE SILK SUNSCREEN
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.