Sunscreen composition and methods of protection from ultraviolet and visible light
AssigneeDoc Martin's of Maui
InventorsChristopher Ryan Stahl, Curtis Allan Cole, George Michael Martin
Life of this patent
Estimating the term…
Abstract
Provided herein is a method of reducing or preventing sunburn caused from visible and ultraviolet radiation in a subject, the method comprising topically applying to the subject a sunscreen composition comprising inorganic UV filtering agents, antioxidants, and at least one inorganic pigment, wherein the at least one inorganic pigments and antioxidants are present in an amount effective to reduce or prevent sunburn caused from visible light. Also provided herein are sunscreen compositions and methods of increasing the SPF of a sunscreen composition that comprises at least one inorganic UV filtering agent.
Claims20
A method of reducing or preventing sunburn caused from visible light and ultraviolet (UV) radiation in a subject, comprising topically applying to the subject a sunscreen composition comprising:
- (a) inorganic UV filtering agents comprising nanosized zinc oxide and nanosized titanium dioxide, present in the sunscreen composition in a total amount ranging from about 10% to about 50% by weight based on a total weight of the sunscreen composition, wherein the nanosized zinc oxide has a mean particle size ranging from about 10 nm to about 100 nm and the nanosized titanium oxide has a mean particle size ranging from about 5 nm to about 500 nm;
- (b) at least one antioxidant present in the sunscreen composition in a total amount ranging from about 0.1% to about 5% by weight relative to the total weight of the sunscreen composition;
- and
- (c) at least one inorganic pigment comprising iron oxide, present in the sunscreen composition in a total amount ranging from about 0.01% to about 5% by weight relative to the total weight of the sunscreen composition,
- wherein the at least one inorganic pigment and the at least one antioxidant are present in an amount effective to reduce or prevent sunburn caused from visible light.
A method of increasing a sunscreen protection factor (SPF) of a sunscreen composition that comprises inorganic UV filtering agents comprising nanosized zinc oxide and nanosized titanium dioxide, wherein the nanosized zinc oxide has a mean particle size ranging from about 10 nm to about 100 nm and the nanosized titanium oxide has a mean particle size ranging from about 5 nm to about 500 nm, the method comprising adding to the sunscreen composition (a) at least one antioxidant present in the sunscreen composition in a total amount ranging from about 0.1% to about 5% by weight relative to the total weight of the sunscreen composition;
- and (b) at least one inorganic pigment comprising iron oxide present in the sunscreen composition in a total amount ranging from about 0.01% to about 5% by weight relative to the total weight of the sunscreen composition,
- wherein the inorganic pigments and at least one antioxidant are present in an amount effective to increase the SPF of the sunscreen composition when tested under outdoor solar exposure.
A sunscreen composition comprising:
- (a) inorganic UV filtering agent comprising nanosized zinc oxide and nanosized titanium dioxide, present in the sunscreen composition in a total amount ranging from about 10% to about 50% by weight based on a total weight of the sunscreen composition, wherein the nanosized zinc oxide has a mean particle size ranging from about 10 nm to about 100 nm and the nanosized titanium oxide has a mean particle size ranging from about 5 nm to about 500 nm;
- (b) at least one antioxidant present in the sunscreen composition in a total amount ranging from about 0.1% to about 5% by weight relative to the total weight of the sunscreen composition;
- and
- (c) inorganic pigments comprising iron oxide present in the sunscreen composition in a total amount ranging from about 0.01% to about 5% by weight relative to the total weight of the sunscreen composition,
- wherein the inorganic pigments and antioxidants are present in an amount effective to reduce or prevent sunburn caused from visible light.
Dependencies are inferred from the claim text.