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Moumoujus

DICALCIUM PHOSPHATE DIHYDRATE.

Optional CAS 7757-93-9 / 7789-77-7 / ABRASIVE, OPACIFYING, ORAL CARE

Dicalcium Phosphate Dihydrate is a multi-functional cosmetic ingredient, primarily used as a mild abrasive to exfoliate the skin and as an opacifying agent to reduce product transparency. It also functions as a filler and thickener to improve product texture.

Summary

Abrasive Exfoliant Opacifying Agent Filler Thickener Bulking Agent Buffering Agent

Science

Mechanism of Action

It physically removes dead skin cells and surface dirt through a polishing action, which aids in exfoliation and refines skin texture. Additionally, it stabilizes formulations, enhances spreadability, and minimizes pH changes through its buffering capacity.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH ≤4.8
0 7 14

Stability

It is most stable below pH 4.8 but less thermally stable above 75°C, potentially losing water of crystallization; a 20% slurry has an alkaline pH of 7.0-8.0.

Conflicts

  • Oxidizing agents
  • Reducing agents
  • Tetracycline antibiotics
  • Indomethacin
  • Aspirin
  • Ampicillin
  • Cephalexin
  • Erythromycin
  • Drugs sensitive to alkaline pH

Safety

Safety Profile

CIR Status
Deferred evaluation
Max tested
49%
Sensitization risk Low

The FDA considers calcium phosphates Generally Recognized As Safe (GRAS) for food and OTC antacids, prompting the CIR Expert Panel to defer evaluation. It is permitted in EU cosmetics, with EWG indicating a low irritation concern.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

This ingredient is safe and versatile, offering mild exfoliation and formulation enhancement as an opacifier, thickener, and pH buffer for various cosmetic applications.

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