SpottyLabs logoSpottylabs
Home › Ingredients › Phosphoric Acid

Phosphoric Acid

Phosphoric Acid is an inorganic acid used in cosmetics and personal care products primarily as a pH adjuster. It helps to stabilize the acidity or alkalinity of a product, ensuring its effectiveness and safety. It is also used in some oral care products for its role in dental health.

PH adjusterVegan
BenefitMinimal 0.5 / 4
RiskLow 1 / 4
Irritation i1 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

Things to watch

See how this matches your skin

Find out exactly what you put onto your skin. Scan any product before you buy. Free and independent — no brand is paying us. Available on Android and iOS.

QR code linking to the SpottyLabs app on Google Play
QR code linking to the SpottyLabs app on the App Store

Products with Phosphoric Acid

Casting Crème Gloss
L'Oréal Paris
Casting Crème Gloss
3.3/ 56/15/29
Go Blonder Lightening Spray
John Frieda
Go Blonder Lightening Spray
2.5/ 53/9/10

Browse all products →

Frequently asked questions

What is the primary role of phosphoric acid in cosmetics?
Phosphoric acid is mainly used as a pH adjuster in cosmetic formulations to ensure the product remains stable and effective over time.