Skip to content

pH Adjuster

HYDROCHLORIC ACID

CAS 7647-01-0 Updated
70

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Hydrochloric acid (the same acid in stomach fluid). In cosmetics it is used in trace amounts only as a pH adjuster. The finished product is safely neutral; raw material itself is corrosive.

Function

BUFFERING

Skin benefits

  • Effective pH adjuster
  • Tiny use levels in finished cosmetics
  • Buffering action in formulation

Known concerns

  • Corrosive at concentrate
  • Eye and skin irritation hazard for raw material handlers
  • Acidic burn risk if neat

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

View →

Related ph adjusters

70
ACETIC ACID
pH Adjuster
 70
AMINOPROPYL DIHYDROGEN PHOSPHATE
pH Adjuster
 70
COPPER GLYCINATE
pH Adjuster
 70
DIHYDROXYACETIC ACID
pH Adjuster
 70
GLUTARIC ACID
pH Adjuster
 70
METHOXY PEG-100/POLYEPSILON CAPROLACTONE ETHYLHEXANOATE
pH Adjuster
 70
PHOSPHORUS PENTOXIDE
pH Adjuster
 70
POTASSIUM BIPHTHALATE
pH Adjuster

Check your shelf

Find HYDROCHLORIC ACID in your products.

Scan any cosmetic product with LuxSense to see if it contains HYDROCHLORIC ACID and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.