Method of treating oxidative stress in skin and compositions therefor
Cellular energy levels in skin cells affected by oxidative stress can be improved through the use of a skin care composition that includes a sucrose ester and a fatty alcohol present at a specific ratio. The fatty alcohol and sucrose ester, when incorporated into a skin care composition at a specific ratio, can provide a synergistic improvement in cellular ATP level for skin cells suffering from the effects of oxidative stress.
1. A skin care composition, comprising:
a) about 0.0001% to about 10% of a sucrose ester comprising a mixture of about 55% to about 80%, by weight of the sucrose ester, sucrose laurate and from about 20% to about 45%, by weight of the sucrose ester, sucrose dilaurate;
b) about 0.0001% to about 10% of hexyldecanol; and
c) a dermatologically acceptable carrier, wherein the hexyldecanol and sucrose ester are present at a weight ratio of 1:2 to 20:1, based on the weight of the composition, and the combination of sucrose ester and hexyldecanol has a synergy factor of at least 1.1 according to the Oxidative Stress Test.
2. The skin care composition of claim 1 , wherein the composition further comprises at least one additional ingredient chosen from vitamins, minerals, peptides, sugar amines, sunscreen agents, oil control agents, flavonoid compounds, anti-oxidants, preservatives, protease inhibitors, tyrosinase inhibitors, anti-inflammatory agents, moisturizing agents, exfoliating agents, skin lightening agents, lubricants, anti-acne actives, chelating agents, anti-wrinkle actives, anti-atrophy actives, phytosterols, N-acyl amino acid compounds, antimicrobials, antifungals, conditioning agents, emulsifiers, rheology modifiers, or mixtures thereof.
3. The skin care composition of claim 2 , wherein the additional ingredient is a skin care active chosen from vitamin B3 compounds, undecylenoyl phenylalanine, vitamin E compounds, palmitoylated dipeptides, palmitoylated pentapeptides, vitamin A compounds, or mixtures thereof.
4. The skin care composition of claim 2 , wherein the composition further comprises a rheology modifier chosen from acrylates/C10-30 alkyl acrylate crosspolymer, acrylates vinyl isodeconate crosspolymers, polyacrylate crosspolymer-6, sodium polyacryloyldimethyl taurate, or mixtures thereof.
5. The skin care composition of claim 2 , wherein the composition further comprises an emulsifier chosen from glycereth-25 pyrrolidonecarboxylic acid isostearate, PEG-100 stearate, steareth-2, steareth-21, or mixtures thereof.
6. A method of improving cellular energy levels in skin cells affected by oxidative stress, comprising:
a) identifying a target portion of skin where treatment is desired; and
b) applying the skin care composition according to claim 1 .
7. The method of claim 6 , wherein the weight ratio of hexyldecanol to sucrose ester is about 1:4 to about 10:1.
8. The method of claim 6 , wherein the target portion of skin exhibits a sign of oxidative stress and the composition is applied over the course of a treatment period.
9. The method of claim 8 , wherein the treatment period is at least 4 weeks and the composition is applied at least once per day.