Foamable sunscreen formulation comprising pigments

1. A foamable sunscreen formulation comprising:

active particles comprising zinc oxide particles having a primary particle size of less than about 50 nm and titanium dioxide particles having a primary particle size of greater than about 100 nm;

b) about 1 wt % microcrystalline cellulose and about 0.2 wt % cellulose gum;

c) about 16 wt % C 12-15 alkyl benzoate, about 1 wt % octyldodecyl neopentanoate, and about 1% wt % butyl octyl salicylate;

d) about 1.2 wt % glyceryl stearate, about 0.5 wt % ceteareth-20, and about 2 wt % polysorbate 80;

e) about 1.8 wt % polyhydroxystearic acid and about 2.7 wt % methyl methacrylate crosspolymer;

f) about 0.8 wt % polyurethane-2, about 0.3 wt % polymethyl methacrylate and about 0.6 wt % tricontanyl PVP film;

g) iron oxide particles comprising red iron oxide particles, yellow iron oxide particles, black iron oxide particles, or mixtures thereof; and

h) about 50 wt % to about $0 wt % water,

wherein at least about 5 wt % of the active particles have a primary particle size greater than about 100 am, and wherein the formulation produces a minimal residual whitening effect when applied to a skin surface.

2. The foamable sunscreen formulation of claim 1 , wherein at least about 20 wt % of the active particles have a primary particle size greater than about 100 nm.

3. The foamable sunscreen formulation of claim 2 , wherein at least about 50 wt % of the active particles have a primary particle size greater than about 100 nm.

4. The foamable sunscreen formulation of claim 3 , wherein at least about 75 wt % of the active particles have a primary particle size greater than about 100 nm.

5. The foamable sunscreen formulation of claim 1 , comprising about 0.05 wt % to about 1.0 wt % iron oxide particles having a primary particle size of less than about 50 nm.

6. A foamable sunscreen formulation comprising:

a) active particles comprising titanium dioxide particles having a primary particle size of less than about 50 nm and zinc oxide particles having a primary particle size of greater than about 100 nm;

b) about 1 wt % microcrystalline cellulose and about 0.2 wt % cellulose gum;

c) about 16 wt % C 12-15 alkyl benzoate, about 1 wt % octyldodecyl neopentanoate, and about 1 wt % butyl octyl salicylate;

d) about 1.2 wt % glyceryl stearate, about 0.5 wt % ceteareth-20, and about 2 wt % polysorbate 80;

e) about 1.8 wt % polyhydroxystearic acid and about 2.7 wt % methyl methacrylate crosspolymer;

f) about 0.8 wt % polyurethane-2, about 0.3 wt % polymethyl methacrylate and about 0.6 wt % tricontanyl PVP film;

g) iron oxide particles comprising red iron oxide particles, yellow iron oxide particles, black iron oxide particles, or mixtures thereof; and

h) about 50 wt % to about 60 wt % water,

wherein at least about 5 wt % of the active particles have a primary particle size greater than about 100 nm, and wherein the formulation produces a minimal residual whitening effect when applied to a skin surface.

7. The foamable sunscreen formulation of claim 6 , wherein at least about 20 wt % of the active particles have a primary particle size greater than about 100 nm.

8. The foamable sunscreen formulation of claim 7 , wherein at least about 50 wt % of the active particles have a primary particle size greater than about 100 nm.

9. The foamable sunscreen formulation of claim 8 , wherein at least about 75 wt % of the active particles have a primary particle size greater than about 100 nm.

10. The foamable sunscreen formulation of claim 6 , comprising about 0.05 wt % to about 1.0 wt % iron oxide particles having a primary particle size of less than about 50 nm.

11. A foamable sunscreen formulation comprising:

a) active particles comprising titanium dioxide particles having a primary particle size of greater than about 100 nm and zinc oxide particles having a primary particle size of greater than 100 nm;

b) about 1 wt % microcrystalline cellulose and about 0.2 wt % cellulose gum;

c) about 16 wt % C 12-15 alkyl benzoate, about 1 wt % octyldodecyl neopentanoate, and about 1 wt % butyl octyl salicylate;

d) about 1.2 wt % glyceryl stearate, about 0.5 wt % ceteareth-20, and about 2 wt % polysorbate 80;

e) about 1.8 wt % polyhydroxystearic acid and about 2.7 wt % methyl methacrylate crosspolymer;

f) about 0.8 wt % polyurethane-2, about 0.3 wt % polymethyl methacrylate and about 0.6 wt % tricontanyl PVP film;

g) iron oxide particles comprising red iron oxide particles, yellow iron oxide particles, black iron oxide particles, or mixtures thereof; and

h) about 50 wt % to about 60 wt % water,

wherein the formulation produces a minimal residual whitening effect when applied to a skin surface.

12. The foamable sunscreen formulation of claim 11 , comprising about 0.05 wt % to about 1.0 wt % iron oxide particles having a primary particle size of less than about 50 urn.

13. A method of preventing sun damage to a patient's skin surface, comprising applying the foamable sunscreen formulation of claim 1 to the skin surface.

14. The method of claim 13 , wherein the foamable sunscreen formulation is applied at least once a day.

15. The method of claim 13 , wherein the foamable sunscreen formulation is applied to the arms, face, legs, chest, trunk or hands.

16. A method of preventing sun damage to a patient's skin surface, comprising applying the foamable sunscreen formulation of claim 6 to the skin surface.

17. The method of claim 16 , wherein the foamable sunscreen formulation is applied at least once a day.

18. The method of claim 16 , wherein the foamable sunscreen formulation is applied to the arms, face, legs, chest, trunk or hands.

19. A method of preventing sun damage to a patient's skin surface, comprising applying the foamable sunscreen formulation of claim 11 to the skin surface.

20. The method of claim 19 , wherein the foamable sunscreen formulation is applied at least once a day.

21. The method of claim 19 , wherein the foamable sunscreen formulation is applied to the arms, face, legs, chest, trunk or hands.