Method for acne treatment using an oxidative-photoactivated composition
View Patent ↗There is provided a skin rejuvenation composition which comprises at least one oxidant, at least one photoactivator capable of activating the oxidant, and at least one healing factor chosen from hyaluronic acid, glucosamine and allantoin, in association with a pharmaceutically acceptable carrier.
1. A method for the treatment of acne, comprising:
(a) topically applying on a patient's acne lesion or acne scar an effective amount of a composition comprising at least one oxidant, a fluorescent compound, and a healing factor selected from hyaluronic acid, glucosamine and allantoin; and
(b) exposing said composition to actinic light having an emission wavelength between about 400 nm and 600 nm for a time sufficient to cause a change in color of the fluorescent compound.
2. The method according to claim 1 , wherein said composition is exposed to actinic light for a period of about 60 seconds to about 5 minutes.
3. The method according to claim 1 , wherein said composition is exposed to actinic light for a period of about 60 seconds to about 5 minutes per cm 2 of an area to be treated.
4. The method according to claim 1 , wherein the source of actinic light is in continuous motion over an area to be treated.
5. The method according to claim 1 , wherein the oxidant is selected from hydrogen peroxide, carbamide peroxide and benzoyl peroxide.
6. The method according to claim 1 , wherein the composition further comprises at least one hydrophilic gelling agent.
7. The method according to claim 6 , wherein the hydrophilic gelling agent is selected from glucose, modified starch, methyl cellulose, carboxymethyl cellulose, propyl cellulose, hydroxypropyl cellulose, carbomer polymers, alginic acid, sodium alginate, potassium alginate, ammonium alginate, calcium alginate, agar, carrageenan, locust bean gum, pectin, and gelatin.
8. The method according to claim 6 , wherein the fluorescent compound is Eosin Y.
9. The method according to claim 6 , wherein the fluorescent compound is selected from a xanthene derivative dye, an azo dye, a biological stain and a carotenoid.
10. The method according to claim 1 , wherein the composition further comprises at least one of rhodamine B, rhodamine WT, rhodamine G, phloxine B, rose bengal, eosin B, fluorescein, erythrosine B, saffranin O, basic fuchsin, acid fuschin, 3,3′ dihexylocarbocyanine iodide, carminic acid, indocyanine green, crocetin, α-crocin (8,8-diapo-8,8-carotenoic acid), zeaxanthine, lycopene, α-carotene, β-carotene, merbromine, bixin, fucoxanthine, methyl violet, neutral red, para red, amaranth, carmoisine, allura red AC, tartrazine, orange G, ponceau 4R, methyl red, murexide-ammonium purpurate, pyronine Y and pyronine B.
11. The method of claim 1 , wherein the wound is exposed to the actinic light at least two, three, four, five or six times, and wherein a fresh application of the composition is applied before exposure to the actinic light.