A synthetic zinc-containing calcium phosphate used in oral care products.
What it is
Zinc hydroxyapatite is an inorganic compound made, according to CosIng, by neutralising an aqueous suspension of calcium hydroxide, zinc hydroxide and calcium carbonate with phosphoric acid. It is a form of hydroxyapatite, the calcium phosphate mineral, in which part of the calcium is replaced by zinc. CosIng lists it as an oral care ingredient.
Where it is used
Found in toothpastes and other oral care products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
The INCI name does not show the particle size or the proportion of zinc.
Functions
- Oral care
- Providing cosmetic effects to the oral cavity, e.g. cleansing, deodorising, protecting.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.