Dicalcium Phosphate Dihydrate

What is Dicalcium Phosphate Dihydrate?

Dicalcium phosphate dihydrate is an inorganic salt, specifically the dihydrated form of calcium hydrogen phosphate, appearing as a fine white crystalline powder typically produced through chemical synthesis from phosphoric acid and calcium sources. In cosmetics, it serves mainly in oral care formulations like toothpastes as a mild polishing agent that helps remove surface debris and stains via gentle mechanical action without excessive abrasion. It also functions in skincare scrubs and cleansers for surface exfoliation to promote smoother texture, and as an opacifier in creams and lotions to reduce transparency, creating a uniform, creamy aesthetic that hides imperfections and improves visual stability.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Abrasive
Provides gentle mechanical exfoliation and polishing, helping remove surface dead skin cells and improve smoothness and slip in scrubs and cleansers.
Opacifying agent
Makes a formula less transparent to create a creamy, opaque look; can also help visually mask suspended particles and improve aesthetic uniformity.
Oral care agent
Supports oral hygiene performance (cleaning, freshening, plaque control, sensitivity support) in toothpaste, mouthwash, and related products.

Benefits

Offers mild mechanical exfoliation to smooth skin surfaces in scrubs and cleansers.

Creates an opaque, creamy appearance in formulations for better aesthetics.

Supports polishing and cleaning action in oral care products like toothpaste.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals seeking gentle exfoliation for daily skincare routines.
Those with extremely sensitive oral mucosa prone to abrasion.
Users of toothpastes wanting effective surface stain removal.
Individuals experiencing irritation from phosphate-based ingredients.
People preferring visually appealing, non-transparent cosmetic textures.
People with known allergies to calcium salts, though rare.

Safety Notes

  • Recognized as safe for cosmetic use by regulatory bodies with low hazard ratings.
  • Presents minimal risk of irritation or comedogenicity in typical concentrations.

Frequently Asked Questions about Dicalcium Phosphate Dihydrate

What is dicalcium phosphate dihydrate?

A synthetic calcium phosphate salt used as a mild abrasive and opacifier in cosmetics and oral products.

Is it safe for daily use?

Yes, it holds low safety concerns and is suitable for regular application in approved products.

Does it clog pores?

It has a non-comedogenic profile, unlikely to contribute to pore blockage.