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Moumoujus

AMMONIUM FLUORIDE.

Avoid CAS 12125-01-8 / ANTIPLAQUE, ORAL CARE

Ammonium fluoride is a highly reactive fluoride salt primarily formulated in oral care products for its enamel remineralization properties. While effective in dental applications at concentrations up to 1.5%, its use in skincare is extremely limited due to significant safety concerns and potential for severe chemical burns. This ingredient poses substantial risks for topical application and is generally unsuitable for precision skincare formulations.

Summary

antiplaque oral care pH adjuster

Science

Mechanism of Action

Releases fluoride ions that can act as a pH adjuster or acidic etchant on skin, but also generates hydrofluoric acid upon contact with moisture, leading to corrosive tissue damage and potential systemic toxicity through calcium and magnesium ion complexation.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–1.5%
Optimal

0.15%

Key findings

  1. 01 1.5% concentration in dental varnish achieved effective enamel remineralization and white spot lesion reduction within 3 months
  2. 02 0.1% fluoride concentration demonstrated 25-30% caries reduction in oral care applications

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.05%
Red flag below
0.1%

Any concentration above 0.05% raises significant safety concerns for topical use, with regulatory restrictions limiting use to oral care products only at maximum 0.15%.

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 6
0 7 14

Stability

Extremely hygroscopic and deliquescent with tendency to decompose into ammonium bifluoride. Heat decomposition releases toxic hydrogen fluoride and ammonia gases. Aqueous solutions maintain acidic pH around 6.0.

Conflicts

  • glass
  • aluminum
  • cement
  • strong acids
  • strong bases
  • strong oxidizing agents
  • soluble calcium salts
  • magnesium salts
  • silicon-containing compounds

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.15%
Pregnancy
Caution
Sensitization risk High

EU Cosmetics Regulation restricts use to oral products only. Classified as toxic via ingestion, inhalation, and skin contact with risk of fluoride poisoning and chemical burns.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

Unsuitable for skincare applications due to severe toxicity risks, corrosive potential, and regulatory restrictions limiting use to oral care products only.

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