Cleansing products

• US 6,074,655 A
• Filed: 02/08/1999
• Issued: 06/13/2000
• Est. Priority Date: 10/25/1996
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Hasenoehrl, Erik John, Albacarys, Lourdes Dessus, Fowler, Timothy John
• Primary Examiner(s): VENKAT, JYOTHSNA A
• Application Number:
  US09/246,369
• Time in Patent Office: 491 Days
• Field of Search: 424/402, 424/401, 424/70.1, 424/70.19, 424/70.21, 424/70.22, 424/70.31
• US Class Current: 424/402
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61P 17/00 Drugs for dermatological disorders
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

The present invention relates to a substantially dry, disposable, personal cleansing product useful for both cleansing and conditioning the skin or hair. These products are used by the consumer by wetting the dry product with water. The product comprises of a water insoluble substrate, a lathering surfactant, and an oil soluble conditioning agent. The invention also encompasses methods for cleansing and conditioning the skin or hair using these products and to methods for manufacturing these products.

Claims

1. A disposable, single use personal care cleansing and conditioning product comprising:

(A) a water insoluble substrate,

(B) from about 0.5% to about 12.5% by weight of said water insoluble substrate of a lathering surfactant added onto or impregnated into said substrate, and

(C) from about 1% to about 99% by weight of said water insoluble substrate of an oil soluble conditioning agent added onto or impregnated into said substrate separately from said lathering surfactant,

wherein said cleansing product deposits greater than 2.5 μ

g/cm² of said oil soluble conditioning agent to the surface of the skin or hair, and wherein said product is substantially dry.

2. A product according to claim 1 wherein the weight ratio of the lathering surfactant to the oil soluble conditioning agent is less than about 20:

1.

3. A product according to claim 1 wherein said water insoluble substrate comprises one or more materials selected from the group consisting of silks, keratins, celluloses, acetates, acrylics, cellulose esters, modacrylics, polyamides, polyesters, polyolefins, polyvinyl alcohols, and mixtures thereof.

4. A product according to claim 3 wherein said water insoluble substrate comprises one or more materials selected from the group consisting of wood pulp, cotton, hemp, jute, flax, acrylics, nylons, polyesters, polyproylenes, polyethylenes, polyvinyl acetates, polyurethanes, rayon, and mixtures thereof.

5. A product according to claim 4 wherein said water insoluble substrate is selected from the group consisting of nonwoven substrates, woven substrates, hydroentangled substrates, natural sponges, synthetic sponges, polymeric netted meshes, formed films, and mixtures thereof.

6. A product according to claim 4 wherein said water insoluble substrate comprises a nonwoven sheet of fibers selected from the group consisting of rayon fibers, cellulose fibers, polyester fibers, and mixtures thereof.

7. A product according to claim 6 wherein said water insoluble substrate comprises two or more sheets of fibers each in turn having different textures.

8. A product according to claim 1 wherein said lathering surfactant is selected from the group consisting of anionic lathering surfactants, nonionic lathering surfactants, amphoteric lathering surfactants, and mixtures thereof.

9. A product according to claim 8 wherein said anionic lathering surfactant is selected from the group consisting of sarcosinates, sulfates, isethionates, phosphates, taurates, and mixtures thereof, wherein said nonionic lathering surfactant is selected from the group consisting of amine oxides, alkyl glucosides, alkyl polyglucosides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, sucrose esters, and mixtures thereof;

and wherein said amphoteric lathering surfactant is selected from the group consisting of betaines, sultaines, hydroxysultaines, alkyliminoacetates, iminodialkanoates, aminoalkanoates, and mixtures thereof.

10. A product according to claim 9 wherein said anionic lathering surfactant is selected from the group consisting of ammonium lauroyl sarcosinate, sodium trideceth sulfate, sodium lauroyl sarcosinate, ammonium laureth sulfate, sodium laureth sulfate, ammonium lauryl sulfate, sodium lauryl sulfate, ammonium cocoyl isethionate, sodium cocoyl isethionate, sodium lauroyl isethionate, sodium cetyl sulfate, and mixtures thereof;

wherein said nonionic lathering surfactant is selected from the group consisting of lauramine oxide, cocoamine oxide, decyl polyglucose, lauryl polyglucose, C12-14 glucose amides, sucrose cocoate, sucrose laurate, and mixtures thereof; and

wherein said amphoteric lathering surfactant is selected from the group consisting of disodium lauroamphodiacetate, sodium lauroamphoacetate, cetyl dimethyl betaine, cocoamidopropyl betaine, cocoamidopropyl hydroxy sultaine, and mixtures thereof.

11. A product according to claim 1 wherein said oil soluble conditioning agent is selected from one or more oil soluble conditioning agents such that the weighted arithmetic mean solubility parameter of said oil soluble conditioning agent is less than or equal to 10.5.

12. A product according to claim 11 wherein said oil soluble conditioning agent is selected from the group consisting of esters of fatty acids, polyol polyesters, glycerin mono-esters, glycerin di-esters, glycerin tri-esters, epidermal and sebaceous hydrocarbons, lanolin, mineral oil, silicone oil, silicone gum, vegetable oil, vegetable oil adduct, petrolatum, nonionic polymers, and mixtures thereof.

13. A product according to claim 1 wherein said cleansing product further comprises a safe and effective amount of one or more active ingredients selected from the group consisting of anti-acne actives, anti-wrinkle and anti-skin actives, non-stearoidal anti-inflammatory actives, topical anesthetics, artificial tanning agents and accelerators, anti-microbial and anti-fungal agents, sunscreen actives, anti-oxidants and mixtures thereof.

14. A product according to claim 13 wherein said active ingredient is selected from the group consisting of salicylic acid, niacinamide, benzoyl peroxide, cis-retinoic acid, trans-retinoic acid, retinol, retinyl palmitate, phytic acid, N-acetyl L-cysteine, azelaic acid, lipoic acid, resorcinol, lactic acid, glycolic acid, ibuprofen, naproxen, hydrocortisone, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, 2,4,4,'"'"'-trichloro-2'"'"'-hydroxy diphenyl ether, 3,4,4'"'"'-trichlorocarbanilide, 2-ethylhexyl p-methoxycinnamic acid, oxybenzone, 2-phenylbenzimidozole-5-sulfonic acid, dihydroxyacetone, and mixtures thereof.

15. A method of manufacturing a disposable, single use personal care cleansing and conditioning product comprising the step of separately adding onto or impregnating into a water insoluble substrate

(A) from about 0.5% to about 12.5% by weight of said water insoluble substrate of a lathering surfactant, and

(B) from about 1% to about 99% by weight of said water insoluble substrate of an oil soluble conditioning agent,

wherein said weight ratio of the lathering surfactant to the oil soluble conditioning agent is less than about 20:

1, wherein said cleansing product deposits greater than 2.5 μ

g/cm² of said oil soluble conditioning agent to the surface of the skin or hair, and wherein said product is substantially dry.

16. A method of manufacturing a product according to claim 15 wherein the lathering surfactant and the oil soluble conditioning agent are separately added onto or impregnated into the water insoluble substrate by spraying, laser printing, splashing, dipping, or coating.

17. A method of cleansing and conditioning the skin or hair with a personal cleansing product, comprising the steps of:

(A) wetting with water a substantially dry, disposable, single use personal cleansing product comprising;

(i) a water insoluble substrate,

(ii) from about 0.5% to about 12.5% by weight of said water insoluble substrate of a lathering surfactant added onto or impregnated into said substrate, and

(iii) from about 1% to about 99% by weight of said water insoluble substrate of an oil soluble conditioning agent added onto or impregnated into said substrate separately from said lathering surfactant,

wherein the weight ratio of the lathering surfactant to the oils soluble conditioning agent is less than about 20;

1, and

(B) contacting the skin or hair with said wetted product,

wherein said cleansing product deposits greater than 2.5 μ

g/cm² of said oil soluble conditioning agent to the surface of the skin or hair.