Moisturizing hand sanitizer
View Patent ↗The present disclosure generally relates to moisturizing hand sanitizers including alcohols that are effective in killing microorganisms while providing a moisturizing benefit to the user's skin. More particularly, the alcohol-based hand sanitizers include a high internal phase emulsion which allows moisturizers or skin protectants such as emollients and/or silicones to be stably incorporated into the sanitizer.
1. A moisturizing hand sanitizer comprising water, an alcohol, and a high internal phase emulsion, the high internal phase emulsion comprising an emulsifier and a skin protectant selected from the group consisting of an emollient, a silicone, and combinations thereof, wherein the high internal phase emulsion comprises an aqueous phase in an amount of 30% (by weight of the emulsion) or less and the high internal phase emulsion is present in the sanitizer in an amount of from 0.1% (by weight of the sanitizer) to 10% (by weight of the sanitizer).
2. The sanitizer of claim 1 wherein the alcohol is present in the sanitizer in an amount of from 20% (by weight of the sanitizer) to 95% (by weight of the sanitizer).
3. The sanitizer of claim 1 wherein the alcohol is selected from the group consisting of methanol, ethanol, propanol, isopropyl alcohol, butanol, t-butanol, 2-butanol, pentanol, hexanol, and combinations thereof.
4. The sanitizer of claim 1 further comprising a humectant.
5. The sanitizer of claim 4 wherein the humectant is present in the sanitizer in an amount of from 0.1% (by weight of the sanitizer) to 10% (by weight of the sanitizer).
6. The sanitizer of claim 4 wherein the humectant is selected from the group consisting of glycerin, sodium hyaluronate, hyaluronic acid, betaine, amino acids, glycosaminoglycans, honey, sorbitol, glycols, propylene glycol, polyols, sugars, hydrogenated starch hydrolysates, sodium PCA, lactic acid, lactates, urea, and combinations thereof.
7. The sanitizer of claim 1 wherein the high internal phase emulsion is present in the sanitizer in an amount of from 0.25% (by weight of the sanitizer) to 5% (by weight of the sanitizer).
8. The sanitizer of claim 1 wherein the emollient is selected from the group consisting of petrolatum, petrolatum based oils, vegetable based oils, mineral oils, natural or synthetic oils, lanolin, fatty esters, glycerol esters, propylene glycol esters, alkoxylated carboxylic acids, alkoxylated alcohols, fatty alcohols, fatty acids, and combinations thereof.
9. The sanitizer of claim 1 wherein the emollient is present in the high internal phase emulsion in an amount of from 0.01% (by weight of the emulsion) to 90% (by weight of the emulsion).
10. The sanitizer of claim 1 wherein the emulsifier is present in the high internal phase emulsion in an amount of from 0.01% (by weight of the emulsion) to 20% (by weight of the emulsion).
11. The sanitizer of claim 1 wherein the silicone is selected from the group consisting of dimethicone, cyclomethicone, polyalkylsiloxanes, polyarylsiloxanes, polyalkylarylsiloxanes, polysiloxane gums, polyether siloxane copolymers, dimethicone polysiloxane, dimethiconol, polysiloxanes, polysiloxane copolymers, polyalkyl aryl silanes, polyaryl siloxanes, polyalkyl siloxanes, polyalkyl aryl silanes, polysiloxane copolymers, alkyl dimethicones, alkylmethicones, alkyldimethicone copoloyls, phenyl silicones, alkyl trimethylsilanes, dimethicone crosspolymer, trisiloxane, and combinations thereof.
12. The sanitizer of claim 1 wherein the silicone is present in the high internal phase emulsion in an amount of from 0.01% (by weight of the emulsion) to 90% (by weight of the emulsion).
13. The sanitizer of claim 1 wherein the emollient is petrolatum and the silicone is selected from the group consisting of dimethicone, cyclopentasiloxane, dimethiconol, dimethicone crosspolymer, and trisiloxane.
14. The sanitizer of claim 1 further comprising a component selected from the group consisting of a disinfectant, a viscosity enhancer, a fragrance, a pH modifier, a skin conditioning agent, and combinations thereof.
15. The sanitizer of claim 1 wherein the sanitizer comprises from 1% (by weight of the sanitizer) to 90% (by weight of the sanitizer) water, from 20% (by weight of the sanitizer) to 95% (by weight of the sanitizer) of the alcohol, and from 0.01% (by weight of the sanitizer) to 10% (by weight of the sanitizer) of a humectant.
16. The sanitizer of claim 1 wherein the high internal phase emulsion has a mean droplet size of 5 microns or less.
17. A wet wipe comprising:
a wipe substrate, and
a moisturizing hand sanitizer comprising water, an alcohol, and a high internal phase emulsion, the high internal phase emulsion comprising an emulsifier and a skin protectant selected from the group consisting of an emollient, a silicone, and combinations thereof, wherein the high internal phase emulsion comprises an aqueous phase in an amount of 30% (by weight of the emulsion) or less and the high internal phase emulsion is present in the sanitizer in an amount of from 0.1% (by weight of the sanitizer) to 10% (by weight of the sanitizer).
18. The wet wipe of claim 17 , wherein the sanitizer comprises from 1% (by weight of the sanitizer) to 90% (by weight of the sanitizer) water and from 20% (by weight of the sanitizer) to 95% (by weight of the sanitizer) of the alcohol.
19. The wet wipe of claim 17 further comprising from 0.01% (by weight of the sanitizer) to 10% (by weight of the sanitizer) of a humectant.
20. A method of making a moisturizing hand sanitizer, the method comprising
combining from 0.1% (by weight of the sanitizer) to 10% (by weight of the sanitizer) of a high internal phase emulsion, from 1% (by weight of the sanitizer) to 90% (by weight of the sanitizer) water, and from 20% (by weight of the sanitizer) to 95% (by weight of the sanitizer) of an alcohol to form the sanitizer,
wherein the high internal phase emulsion comprises an emulsifier and a skin protectant selected from the group consisting of an emollient, a silicone, and combinations thereof, and wherein the high internal phase emulsion comprises an aqueous phase in an amount of 30% (by weight of the emulsion) or less, and
wherein the sanitizer is formed at room temperature.
21. The method of claim 20 further comprising combining from 0.01% (by weight of the sanitizer) to 10% (by weight of the sanitizer) of a humectant with the water, the alcohol, and the high internal phase emulsion.