Cleansing products with improved moisturization

• US 6,132,746 A
• Filed: 05/22/1997
• Issued: 10/17/2000
• Est. Priority Date: 05/22/1997
• 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): Page, Thurman K.
• Assistant Examiner(s): Seidleck, Brian K.
• Application Number:
  US08/861,750
• Time in Patent Office: 1,244 Days
• Field of Search: 424/402, 424/401, 424/70.1, 424/404, 424/59, 424/70.19, 424/70.21, 424/70.22
• US Class Current: 424/402
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/463 containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• CPC Class Codes: A61K 8/4946 Imidazoles or their condensed derivatives, e.g. benzimidazoles
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair

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 a conditioner component. 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) a lathering surfactant added onto or impregnated into said substrate, and

(C) a conditioning component, added onto or impregnated into said substrate separately from said lathering surfactant,

wherein said product has a surface to saturation ratio that is greater than or equal to about 1.25 at any point on the surface of the substrate,

wherein said product is substantially dry, and wherein said product deposits greater than about 2.5 micrograms/cm² of said conditioning component to the surface of the skin or hair.

2. A product according to claim 1 wherein the surface to saturation ratio is greater than or equal to about 1.50, and wherein said cleansing product deposits greater than about 2.5 μ

g/cm² of the conditioning component to the surface of the skin or hair.

3. A product according to claim 1 wherein the surface to saturation ratio is greater than or equal to about 2.00, and wherein said lathering surfactant comprises from about 0.5% to about 40% by weight of said water insoluble substrate, and wherein said conditioning component comprises from about 0.25% to about 150% by weight of said water insoluble substrate.

4. A product according to claim 1 wherein the surface to saturation ratio is greater than or equal to about 1.50, and wherein said water insoluble substrate comprises one or more materials selected from the group consisting of silks, keratins, celluloses, rayons, acetates, acrylics, cellulose esters, modacrylics, polyamides, polyesters, polyolefins, polyvinyl alcohols, and mixtures thereof.

5. A product according to claim 4 wherein the surface to saturation ratio is greater than or equal to about 2.00, and 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 1 wherein the surface to saturation ratio is greater than or equal to about 2.70, and wherein said lathering surfactant is selected from the group consisting of anionic lathering surfactants, nonionic lathering surfactants, amphoteric lathering surfactants, and mixtures thereof.

7. A product according to claim 6 wherein said anionic lathering surfactant is selected from the group consisting of sarcosinates, sulfates, isethionates, phosphates, taurates, lactylates, 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.

8. A product according to claim 1 wherein the surface to saturation ratio is greater than or equal to about 2.00, and wherein said conditioning component is selected from the group consisting of water soluble conditioning agents, oil soluble conditioning agents, and a combination of oil soluble conditioning agents and water soluble conditioning agents.

9. A product according to claim 8 wherein the surface to saturation ratio is greater than or equal to about 2.70, and wherein said conditioning component is selected from the group consisting of esters of fatty acids, polyol polyesters, glycerin mono-esters, glycerin di-esters, glycerin trimesters, epidermal and sebaceous hydrocarbons, lanolin, mineral oil, silicone oil, silicone gum, vegetable oil, vegetable oil adduct, petrolatum, nonionic polymers, glycerin, glycerol, propylene glycol, polypropylene glycols, polyethylene glycols, ethyl hexanediol, hexylene glycols, other aliphatic alcohols, panthenol, urea, cationic polymers, polyols, glycolic acid, lactic acid, niacinamide, sodium PCA, sorbitol, and mixtures thereof.

10. A product according to claim 1 wherein the surface to saturation ratio is greater than or equal to about 2.00, and 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, vitamins, 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.

11. A product according to claim 10 wherein the surface to saturation ratio is greater than or equal to about 2.70, and wherein said active ingredient is selected from the group consisting of salicylic acid, benzoyl peroxide, cis-retinoic acid, trans-retinoic acid, retinol, retinyl palmitate, ascorbic acid, phytic acid, N-acetyl L-cysteine, azelaic acid, lipoic acid, resorcinol, ibuprofen, naproxen, hydrocortisone, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, 2,4,4,'"'"'-trichloro-2'"'"'-hydroxy diphenyl ether, 3,4,4'"'"'-trichlorocarbanilide, 2-ethylhexyl p-methoxycinnamate, oxybenzone, 2-phenylbenzimidozole-5-sulfonic acid, dihydroxyacetone, and mixtures thereof.

12. A method of depositing greater than about 2.5 μ

g/cm² of the conditioning component to the surface of the skin or hair using the product of claim 1.

15. A method of manufacturing a product according to claim 1 wherein said water insoluble substrate is hydrophilically treated to maintain the oil soluble conditioning agents at the surface of said water insoluble substrate.

17. A method of manufacturing a product according to claim 1 wherein the conditioning component is applied to the substrate near the phase transition temperature of the conditioning component.

18. A method of manufacturing a product according to claim 1 wherein the conditioning component is applied to the substrate nonuniformly.

19. A method of manufacturing a product according to claim 1 wherein the said lathering surfactant is applied to the substrate before the conditioning component.

13. 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) a lathering surfactant added onto or impregnated into said substrate, and

(iii) a conditioning component added onto or impregnated into said substrate separately from said lathering surfactant,

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

wherein said product has a surface to saturation ratio that is greater than or equal to about 1.25 at any point on the surface of the substrate,

wherein said product is substantially dry, and wherein said product deposits greater than about 2.5 micrograms/cm² of said conditioning component to the surface of the skin or hair.

14. 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) a lathering surfactant, and

(B) a conditioning component,

wherein the surface to saturation ratio is greater than or equal to about 1.25 at any point on the surface of the substrate,

wherein said resulting product is substantially dry, and wherein said product deposits greater than about 2.5 micrograms/cm² of said conditioning component to the surface of the skin of hair.

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

(A) a water insoluble substrate,

(B) a lathering surfactant added onto or impregnated into said substrate, and

(C) a conditioning component comprising a thickening agent having a melting point of greater than or equal to about 35°

C., wherein said thickening agent is miscible in said conditioning component and wherein said conditioning component is added onto or impregnated into said substrate separately from said lathering surfactant,

wherein said product has a surface to saturation ratio that is greater than or equal to about 1.25 at any point on the surface of the substrate,

wherein said product is substantially dry and wherein said product deposits greater than about 2.5 micrograms/cm² of said conditioning component to the surface of the skin or hair.