Cosmetic ingredient dictionary
Phosphoric Acid in cosmetics: what it is and what it does
Phosphoric Acid is a cosmetic ingredient that keeps the product's acidity steady. Open Beauty Facts finds it in 265 products, most often nail polishes.
By Bravoora teamUpdated Sources checked 2 sourcesHow we check
What does Phosphoric Acid do in a product?
In a cosmetic product, Phosphoric Acid keeps the product's acidity steady. The EU’s CosIng database lists this job for it: buffering.
What other names and numbers does Phosphoric Acid have?
- CAS number
- 7664-38-2
- EC number
- 231-633-2
- CosIng reference
- 36546
Which products contain Phosphoric Acid?
Open Beauty Facts finds Phosphoric Acid in the ingredient lists of 265 of the 22,021 products it has a list for, most often nail polishes, breathable nail polishes and hair care.
Products with it, by country of sale: Norway 61 · Turkey 60 · France 35 · Australia 24.
Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Phosphoric Acid turns up, not how much of the market it is.
Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors
Sources
The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.
- European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
- Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL
Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check
Create a website profile with the things you avoid and the people you check for.
Build my profileSaved to your account. On launch day, sign in to the app with the same email and carry on where you left off.