Skip to content

pH Adjuster

GUANIDINE HCL

CAS 50-01-1 Updated
24

Safety score · 0–100

Caution

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

About

A strongly corrosive salt used industrially and as a protein denaturant. Carries severe GHS hazards; not appropriate for leave-on cosmetics, only carefully formulated rinse-off systems.

Function

BUFFERING

Skin benefits

  • pH adjuster (rinse-off only)
  • Strong protein denaturant

Known concerns

  • Causes severe skin burns and eye damage (GHS H314)
  • Toxic if swallowed/inhaled (H301/H311/H331)
  • Causes damage to organs (H370)
  • Highly corrosive — never for leave-on cosmetics
  • Strict raw-material handling required

References

EU

EU CosIng database

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

Related ph adjusters

25
ISOPROPYLAMINE
pH Adjuster
 25
Lithium hydroxide
pH Adjuster
 25
NITRIC ACID
pH Adjuster
 25
POTASSIUM BORATE
pH Adjuster
 22
DIETHYLAMINE
pH Adjuster
 22
SODIUM ALUMINATE
pH Adjuster
 22
SODIUM BORATE
pH Adjuster
 22
TRIETHYLAMINE
pH Adjuster

Check your shelf

Find GUANIDINE HCL in your products.

Scan any cosmetic product with LuxSense to see if it contains GUANIDINE HCL 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.