The ingredient, explained

Dicalcium Phosphate

A primary study examines this ingredient in the specified preparation and setting.

AbrasiveBulkingOpacifyingOral care

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Ingredient guide

What it is and what it does

Calcium hydrogenorthophosphate

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Abrasive: Provides mechanical surface cleaning or polishing.
Bulking: Changes a product's bulk density.
Opacifying: Makes a product less transparent.
Oral care: Supports cosmetic functions in the mouth, such as cleaning or deodorising.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human oral care research

Calcium-phosphate desensitizing paste reduced tooth-bleaching sensitivity compared with calcium-phosphate-free placebo.

What this does not tell us

Two-phosphate formulation, oral dental route. No isolated dicalcium-phosphate effect or skin benefit. Seven days is follow-up, not repeated treatment duration.

Sources for this summary. PubMed 29520944 ↗

Research review checked Oct 1, 2026

Bounded review of local candidates, exact-name indexed primary journal/PubMed safety and topical searches; not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.

Read the 1 selected study

Human oral care research · n=50
Novel treatment of in-office tooth bleaching sensitivity: A randomized, placebo-controlled clinical study. ↗
Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2018

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