Dicalcium Phosphate



No known benefits

Dicalcium Phosphate at a glance

  • White powder that can be used to create abrasive formulations (think gritty exfoliating scrubs)
  • May also be formulated in a non-abrasive way for use as an opacifying agent in makeup
  • Can inhibit the transfer/smearing of makeup
  • Popular in oral care products, such as toothpaste.

Dicalcium Phosphate description

Dicalcium phosphate is a white powder that can be used to create an abrasive texture for skin care formulations (think gritty exfoliating scrubs). When used this way, it can be problematic for skin, causing tiny micro-tears. As such, it is not recommended. In other more popular capacities, dicalcium phosphate can be formulated in a way that allows it to work as an opacifying agent in cosmetic blends and it may also inhibit the transfer/smearing of makeup—minus the abrasive effects. When used this way, it is not concerning for skin. Commercial dicalcium phosphate is not a chemically discrete entity but rather a mixture of varying amounts of dicalcium and monocalcium phosphates, phosphoric acid, and calcium carbonate (chalk), depending on the origin of the raw material and procedures employed in its production. In 2021, the Cosmetic Ingredient Review Expert Panel deemed dicalcium phosphate safe in the present practices of use and concentration in cosmetics when formulated to be nonirritating. Their report looked at up to 10% concentration for leave-on formulations and 47.7% for rinse-off products. Fun fact: Dicalcium Phosphate is used as a mineral supplement in cereals and other foods. This ingredient is also popular in oral care products, such as toothpaste, where it adds opacity.

Dicalcium Phosphate references

  • CosmeticsInfo.org, Accessed November 2022, ePublication
  • Materials, October 2021, pages 1-37
  • International Journal of Toxicology, 2021, pages 34S-85S

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated