Method of delivering a skin benefit

• US 8,409,154 B2
• Filed: 05/13/2009
• Issued: 04/02/2013
• Est. Priority Date: 05/15/2008
• Status: Active Grant

• Current Assignee: GlaxoSmithKline Consumer Healthcare Holdings (US), LLC (GSK plc)
• Original Assignee: Wyeth (Pfizer Inc.)
• Inventors: Mitra, Shekhar, Zimmerman, Dean A., Wong, Vincent York-Leung, Belkin, Marina
• Primary Examiner(s): SU, SUSAN SHAN
• Application Number:
  US12/465,333
• Publication Number:
  US 20090287168A1
• Time in Patent Office: 1,420 Days
• Field of Search: 604/290, 132/200, 453/5
• US Class Current: 604/290
• CPC Class Codes: A61F 2007/0062 the gas being steam or water vapour
• CPC Class Codes: A61F 2007/0263 made of a substance with therapeutic action, e.g. copper or silver
• CPC Class Codes: A61F 7/034 Flameless
• CPC Class Codes: A61P 17/00 Drugs for dermatological disorders

Abstract

A method of providing a skin benefit to the skin including the use of a skin care active and a portable moist heat delivery system comprising: a water vapor generating portion comprising a water vapor source and a heat source; and a water vapor-air regulating portion located at a skin-facing side of the water vapor generating portion, the water vapor-air regulating portion comprising a water vapor-air mixing layer, a water vapor-air distribution layer, a latent heat delivery surface, and optionally a skin contact layer, where the water vapor generating portion and the water vapor-air regulating portion are in fluid communication is disclosed.

Claims

1. A method of providing benefits to the skin comprising:

(a) applying a skin care composition to the skin to provide a beauty care benefit;

(b) applying a portable moist heat delivery system to the skin coated with the skin care composition, the portable moist heat delivery system comprising;

(1) a water vapor generating portion comprising a water vapor source and a heat source; and

(2) a water vapor-air regulating portion located at a skin-facing side of the water vapor generating portion, the water vapor-air regulating portion comprising a water vapor-air mixing layer, a water vapor-air distribution layer, and optionally a skin contact layer;

the water vapor generating portion and the water vapor-air regulating portion being in fluid communication; and

the water vapor-air regulating portion having a latent heat delivery surface disposed adjacent the water vapor-air regulating portion, where the water vapor-air regulating portion provides a mixture of water vapor and air having a water vapor to dry air ratio of less than 0.065 kg water/kg dry air, wherein the portable moist heat delivery system transfers from about 15% to about 95% of heat to a user as latent heat of condensation, while maintaining skin temperature less than 43°

C.; and

(c) activating the portable moist heat delivery system.

2. The method of claim 1, wherein the skin care composition comprises a skin care active selected from the group consisting of vitamins, peptides, sugar amines, sunscreens, oil control agents, tanning actives, anti-acne actives, desquamation actives, anti-cellulite actives, chelating agents, skin lightening agents, flavonoids, protease inhibitors, non-vitamin antioxidants and radical scavengers, hair growth regulators, anti-wrinkle actives, anti-atrophy actives, minerals, phytosterols and/or plant hormones, tyrosinase inhibitors, N-acyl amino acid compounds, moisturizers, plant extracts, depillatories and any combination thereof.

3. The method of claim 1, wherein the portable moist heat delivery system is left on the skin for about 1 minute to about eight hours.

4. The method of claim 3, wherein the portable moist heat delivery system is left on the skin for about 15 minutes.

5. The method of claim 3, wherein the portable moist heat delivery system is left on the skin for about 30 minutes.

6. The method of claim 1 wherein the portable moist heat delivery system transfers from about 20% to about 80% of heat to a user as latent heat of condensation, while maintaining skin temperature less than 43°

C.

7. The method of claim 1 wherein the portable moist heat delivery system transfers from about 40% to about 75% of heat to a user as latent heat of condensation, while maintaining skin temperature less than 43°

C.

8. The method of claim 1 wherein the portable moist heat delivery system is mask shaped.

9. The method of claim 8 wherein the skin care composition is a film on the portable moist heat delivery system.

10. The method of claim 1 wherein the portable moist heat delivery system is a rectangular patch.

11. The method of claim 1 wherein the portable moist heat delivery system further comprises an adhesive.

12. The method of claim 1 wherein the portable moist heat delivery system is a circular patch.

13. The method of claim 1 wherein the portable moist heat delivery system is shaped to cover the lower half of the face.

14. The method of claim 1 further comprising the step of providing a skin surface temperature of at least 36°

C. within about 5 minutes of initiation of heating of the portable moist heat delivery system.

15. The method of claim 1 wherein the water vapor source comprises at least one water vapor generating heat cell.

18. The method of claim 1, further comprising:

(d) contacting the skin with the mixture of water vapor and air having a water vapor to dry air ratio of less than 0.065 kg water/kg dry air;

condensing the mixture of water vapor and air at the latent heat delivery surface to transfer the latent heat energy to the skin;

or a combination thereof.

20. The method of claim 1, further comprising:

(d) transferring from about 15% to about 95% of heat to a user as latent heat of condensation.

16. A method of providing benefits to the skin comprising:

(a) applying a portable moist heat delivery system to the facial skin, wherein the portable moist heat delivery system comprises;

(1) a water vapor generating portion comprising a water vapor source and a heat source; and

(2) a water vapor-air regulating portion located at a skin-facing side of the water vapor generating portion, the water vapor-air regulating portion comprising a water vapor-air mixing layer, a water vapor-air distribution layer, and optionally a skin contact layer;

the water vapor generating portion and the water vapor-air regulating portion being in fluid communication and the water vapor-air regulating portion having a latent heat delivery surface disposed adjacent the water vapor-air regulating portion;

where the water vapor-air regulating portion provides a mixture of water vapor and air having a water vapor to dry air ratio of less than 0.065 kg water/kg dry air, and wherein the portable moist heat delivery system transfers from about 15% to about 95% of heat to a user as latent heat of condensation, while maintaining skin temperature less than 43°

C.;

(b) applying a shaving composition to the facial skin; and

(c) shaving the facial skin.

17. The method of claim 16, wherein the portable moist heat delivery system is applied to the facial skin for 5 minutes.

19. The method of claim 16, further comprising:

contacting the skin with the mixture of water vapor and air having a water vapor to dry air ratio of less than 0.065 kg water/kg dry air;

condensing the mixture of water vapor and air at the latent heat delivery surface to transfer the latent heat energy to the skin;

or a combination thereof.

21. The method of claim 16, further comprising:

transferring from about 15% to about 95% of heat to a user as latent heat of condensation.