Film-Formers Enhance Water Resistance and SPF in Sun Care Products

Dec 23, 2005 | Contact Author | By: Allison Hunter and Melanie Trevino, New Phase Technologies, A Division of Baker Petrolite Corporation
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Title: Film-Formers Enhance Water Resistance and SPF in Sun Care Products
SPFx sunscreenx water resistancex film formersx
  • Article

By capitalizing on new technologies for improved aesthetics, greater resistance to wash-off and enhanced SPF, formulators can create innovative sun care products to meet specialized global requirements and the needs of individual skin types.

Among materials that impart water resistance, C30-38 olefin/isopropyl maleate/MA copolymera is a low molecular weight, hydrophobic material that ensures a light feel. The MA in this INCI name refers to maleic anhydride. For convenience, we will refer to this polymer as the olefin/MA copolymer.

The maleic functionality of the olefin/MA copolymer makes it easy to disperse and helps it adhere to the skin. It does need to be neutralized for oil-in-water dispersions, but when neutralized, it disperses readily into water and also acts as an anionic emulsifier. The olefin/MA copolymer forms a water-resistant film that also enhances SPF. Because of the copolymer’s highly efficient film-forming properties, it may be possible to use lower levels of potentially irritating active ingredients in formulation.

Excerpt Only This is a shortened version or summary of the article that appeared in the July 1, 2004 issue of Cosmetics & Toiletries magazine. If you would like a copy of the complete article, please contact us at customerservice@cosmeticsandtoiletries.com.