MASCARA FORMULATION

Abstract

Disclosed is an oil-in-water anionic emulsion for eyelashes, and methods for its use, comprising a continuous phase comprising 35 to 55% by weight of water based on the total weight of the emulsion, a discontinuous phase comprising 15 to 25% by weight of a combination of waxes, wherein the combination of waxes comprises paraffin wax, carnauba wax, beeswax, and candelilla wax based on the total weight of the emulsion, and 5 to 15% by weight of the emulsion of an anionic surfactant system comprising stearic acid, palmitic acid, myristic acid, polyethylene glycol-40 (PEG-40) stearate, and stearyl stearate, wherein the oil-in-water anionic emulsion is capable of thickening the appearance of eyelashes.

Claims

1-12. (canceled)

13. A method of applying an oil-in-water anionic emulsion to eyelashes, the method comprising applying the emulsion to eyelashes such that the emulsion is in direct contact with hair shafts of the eyelashes, wherein the oil-in-water anionic emulsion comprises: (a) a continuous phase comprising 35 to 55% by weight of water based on the total weight of the emulsion; (b) a discontinuous phase comprising 15 to 25% by weight of a combination of waxes, wherein the combination of waxes comprises paraffin wax, carnauba wax, beeswax, and candelilla wax based on the total weight of the emulsion; and (c) 5 to 15% by weight of the emulsion of an anionic surfactant system comprising stearic acid, palmitic acid, myristic acid, polyethylene glycol-40 (PEG-40) stearate, and stearyl stearate.

14. The method of claim 13, wherein the oil-in-water anionic emulsion thickens the appearance of eyelashes when compared with eyelashes that do not include the oil-in-water anionic emulsion.

15. The method of claim 13, wherein the oil-in-water anionic emulsion is applied to the eyelashes with a mascara wand.

16. The method of claim 13, wherein the oil-in-water anionic emulsion comprises 14 to 17% by weight of paraffin wax, 2 to 5% by weight of carnuba wax, 2 to 5% by weight of beeswax, and 0.5 to 2% by weight of candelilla wax.

17. The method of claim 13, wherein the oil-in-water anionic emulsion comprises 2 to 5% by weight of stearic acid, 2 to 5% by weight of palmitic acid, 0.1 to 1% by weight of myristic acid, 0.5 to 2% by weight of PEG-40 stearate, and 0.5 to 2% by weight of stearyl stearate.

18. The method of claim 13, wherein the oil-in-water anionic emulsion further comprises VP/Eicosene copolymer, trimethylpentanediol/adipic acid/glycerin cross polymer, hydroxyethylcellulose, and bis-diglyceryl polyacyladipate-2.

19. The method of claim 18, wherein the oil-in-water anionic emulsion comprises 0.1 to 1% by weight of VP/Eicosene copolymer, 0.5 to 2% by weight of trimethylpentanediol/adipic acid/glycerin cross polymer, 0.1 to 1% by weight of hydroxyethylcellulose, and 2 to 5% by weight of bis-diglyceryl polyacyladipate-2.

20. The method of claim 13, wherein the oil-in-water anionic emulsion comprises iron oxide, triethanolamine, silica, benzyl alcohol, nylon-12, caprylyl glycol, and dimethicone.

21. The method of claim 13, wherein the oil-in-water anionic emulsion comprises 5 to 15% by weight of iron oxide, 1 to 5% by weight of triethanolamine, 0.1 to 2% by weight of silica, 0.1 to 2% by weight of benzyl alcohol, 0.1 to 1% by weight of nylon-12, 0.1 to 1% by weight of caprylyl glycol, and 0.1 to 1% by weight of dimethicone.

22. The method of claim 13, wherein the oil-in-water anionic emulsion further comprises chlorphenesin, panthenol, sorbitan stearate, synthetic fluorphlogopite, tocopheryl acetate, disodium EDTA, tocopheryl acetate, and cyclohexasiloxane.

23. The method of claim 13, wherein the oil-in-water anionic emulsion further comprises a pigment.

24. The method of claim 13, wherein the oil-in-water anionic emulsion is a mascara.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1: Mascara container that can be used to apply the composition of the present invention to eyelashes.

DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

[0023] The inventor discovered a mascara that can be used to make the eyelashes appear longer and thicker. The discovery is based on the combination of an anionic surfactant system and a wax blend. In particular, the anionic surfactant system can include stearic acid, palmitic acid, myristic acid, polyethylene glycol-40 (PEG-40) stearate, and stearyl stearate. The amount of this surfactant system can range from 5 to 15% by weight of the composition. With respect to the wax blend, it can include a combination of paraffin wax, carnauba wax, beeswax, and candelilla wax. The amount of the waxes in the composition can range from 15 to 25% by weight of the composition. As shown in the below example composition, additional ingredients can also be added to the formulation to provide various tactile properties, consistency, viscosity, etc. Notably, all of the ingredients in the formulation are commercially available. Examples of suppliers are provided in the International Cosmetic Ingredient Dictionary and Handbook, 12.sup.th Edition (2008), the sections of which are incorporated into the present application by reference.

[0024] Oil-in-water emulsions such as the present invention include a continuous aqueous phase and a discontinuous oil phase. The aqueous phase in the context of the present invention can include water in an amount of 35 to 55% by weight of the total emulsion. Additional hydrophilic ingredients are included in the aqueous phase. The discontinuous oil phase can include the wax blend in an amount of 15 to 25% by weight of the total emulsion. Additional hydrophobic ingredients are included in the discontinuous oil phase. The anionic surfactant system used to create the emulsion can be used in an amount of 5 to 15% by weight of the total emulsion. Additional ingredients and excipients can be included in the emulsion to achieve desired characteristics (e.g., viscosity or tactile properties) and stability (e.g., chelating agents and preservatives).

[0025] FIG. 1 illustrates a mascara container 10 that can be used to apply the emulsions of the present invention to eyelashes. The container 10 can include an elongated portion or wand 11 and an applicator tip 12 coupled to the end of the wand 11 portion. The wand portion 11 can be coupled to a cap 13 of the container 10. The emulsions of the present invention can be stored in the body or base 14 portion of the container 10.

[0026] Table 1 describes a non-limiting mascara formulation of the present invention. The Table 1 formulation is an oil-in-water anionic emulsion that can increase the thickness of eyelashes by application of the emulsion to eyelash hairs.

TABLE-US-00001 TABLE 1 % Concentration Ingredient (by weight) Water 45 Paraffin 16 Iron oxides 10 Stearic acid 4 Palmitic acid 3 Carnauba Wax 3 bis-diglyceryl polyacyladipate-2 3 Beeswax 3 Triethanolamine 2 Stearyl stearate 1 Trimethylpentanediol/adipic 1 acid/glycerin crosspolymer Silica 1 PEG-40 stearate 1 Candelilla wax 1 Benzyl alcohol 1 Nylon-12 0.7 Myristic acid 0.5 VP/Eicosene copolymer 0.5 Caprylyl glycol 0.5 Dimethicone 0.5 Hydroxyethylcellulose 0.4 Excipients q.s.

[0027] The emulsion was prepared by standard techniques known in the cosmetic industry. In particular, the water phase ingredients and oil phase ingredients and surfactants were added to a mixing tank and mixed under heat until a homogenous composition was obtained. The composition was then cooled to room temperature (20-25° C.). Excipients were added to the formulation to achieve stability (e.g., chelating agents and preservatives). The excipients included chlorphenesin, panthenol, sorbitan stearate, synthetic fluorophlogopite, tocopheryl acetate, disodium EDTA, and cyclohexasiloxane. Notably, however, no excipients need to be added and the formulation can be q.s.'d with water.

[0028] The above example formulation is included to demonstrate certain non-limiting aspects of the invention. It should be appreciated by those of skill in the art that the techniques disclosed in the examples which follow represent techniques discovered by the inventor to function well in the practice of the invention. However, those of skill in the art should, in light of the present disclosure, appreciate that many changes can be made in the specific embodiments which are disclosed and still obtain a like or similar result without departing from the spirit and scope of the invention.

[0029] Also, all of the ingredients, compositions, or methods disclosed and claimed in this specification can be made and executed without undue experimentation in light of the present disclosure. While the ingredients, compositions, or methods of this invention have been described in terms of particular embodiments, it will be apparent to those of skill in the art that variations may be applied to the skin-active ingredients, compositions, or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit and scope of the invention.