HIGH SPF SUNSCREEN COMPOSITIONS
Improved high SPF sunscreen formulations not containing oxybenzone and octinoxate are disclosed. The present disclosure also discloses sunscreen compositions including: (i) a film forming component including at least one film forming polymer; (ii) silica; (iii) a sunscreen active component including at least one sunscreen active compound selected from inorganic sunscreen actives, organic sunscreen actives, and combinations thereof; (iv) a carrier; (v) an optional emulsifier component including at least one emulsifier; (vi) an optional emulsion stabilizer component including at least one emulsion stabilizer; (vii) an optional chelator component; and (viii) an optional skin conditioning agent component.
1 . A sunscreen composition comprising:
(i) a film forming component comprising at least one film forming polymer;
(ii) silica;
(iii) a sunscreen active component comprising at least one sunscreen active compound selected from inorganic sunscreen actives, organic sunscreen actives, and combinations thereof; and
(iv) a carrier,
wherein:
the total film forming component concentration is from about 0.1 wt. % to about 20 wt. %;
the weight ratio of total film forming polymer to silica is from about 1.01:1 to about 10:1;
the average particle size of the silica is from about 1 μm to about 40 μm;
the total sunscreen active component concentration is from about 1 wt. % to about 50 wt. %;
the balance of the composition comprises the carrier; and
the SPF rating of the sunscreen composition is from 50 to 120.
2 . The sunscreen composition of claim 1 , wherein the film forming polymer concentration is from about 2 wt. % to about 15 wt. %.
3 . The sunscreen composition of claim 1 , wherein the film forming component comprises styrene/acrylates copolymer, wherein the concentration thereof is from about 1 wt. % to about 8 wt. %.
4 . The sunscreen composition of claim 1 , wherein the weight ratio of film forming polymer to silica is from about 1.01:1 to about 10:1.
5 . The sunscreen composition of claim 3 , wherein the weight ratio of styrene/acrylates copolymer to silica is from about 1.05:1 to about 8:1.
6 . The sunscreen composition of claim 1 , wherein the average particle size of the silica is from about 1 μm to about 30 μm.
7 . The sunscreen composition of claim 6 , wherein the average particle size of the silica is from about 5 μm to about 17.5 μm.
8 . The sunscreen composition of claim 1 , wherein the silica concentration is from about 0.25 wt. % to about 10 wt. %.
9 . The sunscreen composition of claim 8 , wherein the silica concentration is from about 1 wt. % to about 5 wt. %.
10 . The sunscreen composition of claim 1 , wherein the sunscreen active component does not comprise an effective amount of oxybenzone and octinoxate.
11 . The sunscreen composition of claim 1 , further comprising:
(v) an emulsifier component comprising at least one emulsifier; and
(vi) an emulsion stabilizer component comprising at least one emulsion stabilizer, wherein:
the emulsifier component concentration is from about 0.5 wt. % to about 20 wt. %; and
the emulsion stabilizer component concentration is from about 0.05 wt. % to about 20 wt. %.
12 . The sunscreen composition of claim 11 , wherein the emulsifier component concentration is from about 1 wt. % to about 15 wt. %.
13 . The sunscreen composition of claim 11 , wherein the emulsifier component comprises an alkoxylated carboxylic acid emulsifier, wherein the sunscreen composition comprises from about 0.5 wt. % to about 10 wt. % of the alkoxylated carboxylic acid emulsifier.
14 . The sunscreen composition of claim 11 , wherein the emulsion stabilizer component concentration is from about 1 wt. % to about 15 wt. %.
15 . The sunscreen composition of claim 1 , further comprising a chelator component (vii) at a concentration of from about 0.01 wt. % to about 1 wt. %.
16 . The sunscreen composition of claim 15 , wherein the chelator component comprises a chelator having at least one carboxylic acid moiety.
17 . The sunscreen composition of claim 16 , wherein the carboxylic acid chelator is an amino acid or EDTA.
18 . The sunscreen composition of claim 1 , further comprising a skin conditioning agent component (viii) at a concentration of from about 0.1 wt. % to about 10 wt. %.
19 . The sunscreen composition of claim 1 , wherein the carrier comprises water or wherein the carrier is water.
20 . The sunscreen composition of claim 1 , wherein the SPF rating is from 110 to 120.