- Categories: Film-Forming/Holding Agents
VP/copolymer is a film-forming agent often used in water-resistant sunscreen products. It helps the sunscreen adhere better to skin and resist breaking down in water. It does not, however, last for hours, which is why you must reapply even water-resistant sunscreens at regular intervals.
References for this information:
Journal of Dispersion Science and Technology, May 2019, pages 1075-1082
Contact Dermatitis, January 2019, page 63
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