Tricalcium Phosphate

What is Tricalcium Phosphate?

Tricalcium phosphate is an inorganic compound, a calcium salt of phosphoric acid with the formula Ca3(PO4)2, appearing as a fine, white, odorless, tasteless powder insoluble in water. It occurs naturally in rocks and bones and is produced synthetically for industrial use. In cosmetics, it finds application primarily in oral care formulations like toothpastes, as well as in powders, scrubs, cleansers, and emulsions. Functionally, it acts as a mild abrasive to polish surfaces through mechanical action, an anticaking agent by adsorbing excess moisture to maintain free-flowing powders, an opacifying agent by scattering light for a creamy visual effect, and a masking agent to neutralize off-odors. Its biocompatibility supports roles in dental products for cleaning without excessive wear.

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.
Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
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.
Anticaking agent
Prevents powders from clumping by reducing moisture pickup and improving flow, keeping loose and pressed powders uniform during storage and use.
Masking
Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.

Benefits

Offers mild mechanical exfoliation to smooth skin and teeth surfaces.

Prevents clumping in powdered cosmetics for better application and storage.

Creates an opaque, uniform appearance in liquid and cream formulas.

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 using scrubs or cleansers for gentle surface polishing.
Those with known hypersensitivity to phosphate salts.
Users of loose or pressed powders needing smooth texture and flow.
Individuals sensitive to mineral particulates in powders.
People incorporating oral care products for daily hygiene support.
People prone to inhalation issues with fine airborne powders.

Safety Notes

  • Recognized as safe for cosmetic use by regulatory reviews.
  • Low hazard rating with minimal absorption through skin.

Frequently Asked Questions about Tricalcium Phosphate

What is tricalcium phosphate used for in skincare?

It functions as an abrasive for gentle exfoliation, anticaking agent in powders, and opacifier for creamy looks.

Is tricalcium phosphate safe for skin?

Yes, it has a low hazard profile and is deemed safe in cosmetic concentrations by expert reviews.

Does it clog pores?

It carries a non-comedogenic rating, making it unlikely to contribute to pore blockage.