SUNSCREEN COMPOSITIONS AND METHODS OF USE
The invention encompasses additives for addition to a bodywash, where the additives contain one or more sunscreens, and where a bodywash which contains the additive imparts to the skin an SPF of at least about 2, in some cases at least about 5, or 10, or 15. Also described are methods of making and using the additives.
1 . A sunscreen additive for addition to a bodywash, comprising a first component comprising a first sunscreen and a cationic polymer, and a second component comprising a second sunscreen, wherein the first component and the second component are added to the bodywash separately.
2 . The sunscreen additive of claim 1 wherein the first component comprises an absorber sunscreen and the second component comprises a physical blocker sunscreen.
3 . The sunscreen additive of claim 1 wherein the first sunscreen is a first organic sunscreen.
4 . The sunscreen additive of claim 3 wherein the first organic sunscreen is octyl methoxycinnamate.
5 . The sunscreen additive of claim 3 wherein the second sunscreen is a second organic sunscreen.
6 . The sunscreen additive of claim 5 wherein the first and second organic sunscreens are selected from the group consisting of aminobenzoic acid, avobenzone, cinnoxate, dioxybenzone, homosalate, menthyl anthranilate, octocrylene, octyl methoxycinnamate, octyl salicate, oxybenzone, padimate O, phenylbenzimidazole sulfonic acid, sulisobenzone, and trolamine salicylate.
7 . The sunscreen additive of claim 1 wherein either the first or the second sunscreen is an inorganic sunscreen.
8 . The sunscreen additive of claim 7 wherein the inorganic sunscreen is selected from the group consisting of titanium dioxide and zinc oxide.
9 . The sunscreen additive of claim 1 wherein the cationic polymer is a polyquaternium.
10 . The sunscreen additive of claim 1 further comprising a film former.
11 . The sunscreen additive of claim 1 further comprising a preservative.
12 . The sunscreen additive of claim 1 further comprising a chelating agent.
13 . The sunscreen additive of claim 1 wherein at least one of the sunscreens is encapsulated.
14 . A method for preparing a bodywash comprising a sunscreen additive comprising a first component comprising a first sunscreen and a cationic polymer, and a second component comprising a second sunscreen, the method comprising combining the first component with a bodywash, then separately combining the second component with the bodywash.
15 . The method of claim 14 wherein the sunscreen additive further comprises a cationic polymer.
16 . The method of claim 14 wherein the sunscreen additive further comprises a film former.
17 . The method of claim 14 wherein the sunscreen additive further comprises a preservative.
18 . The method of claim 14 wherein the sunscreen additive further comprises a chelating agent.
19 . The method of claim 14 wherein at least one of the sunscreens is encapsulated.