Polyquaternium-10 is used in cosmetics as a conditioner, thickener and emollient. It has been found that cosmetic products containing up to 1% Polyquaternium-10 have not been shown to be irritants, se ...

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Polyquaternium-10 is used in cosmetics as a conditioner, thickener and emollient. It has been found that cosmetic products containing up to 1% Polyquaternium-10 have not been shown to be irritants, sensitizers or photosensitizers. Based on the information presented, it is concluded that Polyquaternium-10 is safe as a cosmetic ingredient in current usage practices (1).

Polyquaternium-10 has proved to be well tolerated in assessments of ocular biocompatibility with good functional and morphological results in experiments on laboratory animals and could therefore be presented as a new alternative in the development of ophthalmic surgical devices (2).

It is used as a conditioner in shampoos to improve deposition uniformity and deposition efficiency of hair conditioning agents and to lubricate them (3) and soften them to avoid the rippling effect (4).

References________________________________________

(1) Final Report on the Safety Assessment of Polyquaternium-10
International Journal of Toxicology May/June 1988 vol. 7 no. 3 335-351
(2) Ocular biocompatibility of polyquaternium 10 gel: functional and morphological results.
Alasino RV, Garcia LG, Gramajo AL, Pusterla JP, Beltramo DM, Luna JD.
J Mater Sci Mater Med. 2015 Feb
(3) Linking enhanced deposition agent functionality with aesthetic performance.
Erazo-Majewicz P, Roberts-Howard C, Oldham E, Lynch C, Graham J, Usher CR, Joneja S.   -   J Cosmet Sci. 2011 Mar-Ap
(4) Evaluation of hair humidity resistance/moisturization from hair elasticity.
Gao T.   -   J Cosmet Sci. 2007 Jul-Aug

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