METHOD FOR EVALUATING GLOW OF SKIN, METHOD FOR EXAMINING SKIN GLOW IMPROVERS, AND SKIN GLOW IMPROVER

• US 20190212136A1
• Filed: 03/13/2019
• Published: 07/11/2019
• Est. Priority Date: 11/10/2014
• Status: Abandoned Application

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: MASUDA, Yuji, YAGI, Eiichiro, KUWAHARA, Tomohiro
• Application Number:
  US16/352,389
• Publication Number:
  US 20190212136A1
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/107 Measuring physical dimensions, e.g. size of the entire body or parts thereof
• CPC Class Codes: A61B 5/441 Skin evaluation, e.g. for skin disorder diagnosis
• CPC Class Codes: A61K 8/368 with carboxyl groups directly bound to carbon atoms of aromatic rings
• 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: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: G01B 11/30 for measuring roughness or irregularity of surfaces
• CPC Class Codes: G01N 21/21 Polarisation-affecting properties G01N21/19 takes precedence
• CPC Class Codes: G01N 21/57 Measuring gloss

Abstract

Provided are an evaluation method for objectively evaluating the glow of the skin, a skin glow improver, and a method for examining skin glow improvers. This method for evaluating the glow of the skin comprises assessing the specular reflectance and diffuse reflectance of skin after polarized light is applied to the surface of the skin, and determining that glow is present in the skin when prescribed conditions are satisfied. A skin glow improver is provided by combining an alkali metal salt of alkoxysalicylic acid and trimethylglycine. This method for examining skin glow improvers makes it possible, using a significant decrease in surface roughness as an indicator, to examine samples capable of improving the specular reflectance of the skin.

Claims

1-7. -7. (canceled)

8. A method for improving a glow of a skin comprising applying to a skin of a subject who desires to improve a skin glow a skin glow improving amount of alkoxysalicylic acid or an alkaline metal salt thereof.

9. The method of claim 8, wherein said applying comprises applying potassium 4-methoxysalicylate to the skin of the subject.

10. The method of claim 8, further comprising applying trimethylglycine to the skin of the subject.

11. The method of claim 9, further comprising applying trimethylglycine to the skin of the subject.

12. The method of claim 9, wherein a concentration of potassium 4-methoxysalicylate is 0.5% to 3%.

13. The method of claim 10, wherein a concentration of trimethylglycine is 2% to 10%.

14. The method of claim 11, wherein a concentration of trimethylglycine is 2% to 10%.

15. The method of claim 8, wherein the subject further desires to enhance a specular reflectance.

16. The method of claim 8, wherein the subject has a dull skin.

17. The method of claim 8, wherein the skin of the subject has a glossy or greasy shine.

18. The method of claim 8, wherein the subject has translucent skin.

19. A composition, comprising skin glow improving amounts of a) alkoxysalicylic acid or an alkaline salt thereof and b) trimethylglycine.

20. The composition of claim 19, wherein the alkoxysalicylic acid or the alkaline salt thereof is potassium 4-methoxysalicylate.

21. The composition of claim 20, wherein a concentration of potassium 4-methoxysalicylate is 0.5% to 3%.

22. The composition of claim 19, wherein a concentration of trimethylglycine is 2% to 10%.

23. The composition of claim 20, wherein a concentration of trimethylglycine is 2% to 10%.

24. The composition of claim 21, wherein a concentration of trimethylglycine is 2% to 10%.