Transparent concealing cosmetic compositions

• US 20040120908A1
• Filed: 11/15/2003
• Published: 06/24/2004
• Est. Priority Date: 11/15/2002
• Status: Active Grant

• Current Assignee: Isaac D. Cohen, John D. Dreher, Maryanne Ivanjesku, Sharon Mesfen, Yelena Mikhaylova
• Original Assignee: Isaac D. Cohen, John D. Dreher, Maryanne Ivanjesku, Sharon Mesfen, Yelena Mikhaylova
• Inventors: Cohen, Isaac D., Mikhaylova, Yelena, Ivanjesku, Maryanne, Mesfen, Sharon, Dreher, John D.
• Granted Patent: US 7,794,740 B2
• Time in Patent Office: Days
• US Class Current: 424/63
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/43 Pigments; Dyes
• CPC Class Codes: A61K 2800/436 Interference pigments, e.g. Iridescent, Pearlescent
• CPC Class Codes: A61K 2800/651 The particulate/core comprising inorganic material
• CPC Class Codes: A61K 8/0241 Containing particulates characterized by their shape and/or structure see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes
• CPC Class Codes: A61K 8/0258 Layered structure
• CPC Class Codes: A61K 8/26 Aluminium; Compounds thereof
• CPC Class Codes: A61Q 1/02 Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 19/02 for chemically bleaching or whitening the skin

Abstract

The present invention relates to topical compositions comprising (a)a transparent component; and (b) a non-interference platelet component having an average particle size of 25μ or less, the platelet exhibiting a light transmission value of about 20% to about 70%, and a light reflectance value of about 10% to about 20%. The compositions are useful in providing effective but sheer concealment to skin flaws, without the necessity of using large amounts of metal oxide pigments.

Claims

1. A composition for topical application to the skin comprising (a)a transparent component;

(b) a non-interference platelet component having an average particle size of 25μ

or less, the platelet exhibiting a light transmission value of about 20% to about 70%, and a light reflectance value of about 10% to about 20%.

2. The composition of claim 1 which further comprises at least one supplemental component (c) which is a non-interference platelet component having a light transmission value of less than about 20%.

3. The composition of claim 1 in which the transparent component is a glass bead or microsphere.

4. The composition of claim 1 in which the platelet (b) is an alumina flake.

5. The composition of claim 1 in which the platelet is a titanium dioxide coated alumina flake having an average particle size of about 15 to about 22μ

.

6. The composition of claim 2 in which the non-interference component (c) is a pearlescent platelet having an average particle size of less than about 50μ

.

7. The composition of claim 6 in which the non-interference component is bismuth oxychloride.

8. The composition of claim 6 in which the platelet (c) comprises mica, at lease one iron oxide and titanium dioxide.

9. The composition of claim 6 in which the platelet (c) is a metallic platelet comprising iron oxide and alumina.

10. The composition of claim 2 which comprises an additional supplemental component (d) which is an interference silica flake pigment.

11. The composition of claim 1 comprising (a) a glass bead or microsphere;

(b)a non-interference platelet having an average particle size of 25μ

or less, the platelet exhibiting a light transmission value of about 20% to about 70%, and a light reflectance value of about 10% to about 20%; and

optionally (c) a non-interference pearlescent or metallic platelet having a light transmission value of less than about 20% and (d) an interference silica flake pigment.

12. The composition of claim 1 which comprises at least one metal oxide pigment in an amount of less than about 15%.

13. The composition of claim 12 in which the metal oxide is a nanopigment.

14. The composition of claim 1 which is a whitening product.

15. A composition for topical application to the skin comprising at least one transparent component which is a solid glass sphere having an average particle size of about 4.5 microns, and a maximum particle size of about 13 microns, and a refractive index of about 1.51.

16. A topical powder composition comprising (a) a hollow glass sphere;

and (b) a non-interference platelet having a light transmission value of about 30 to about 70% and a light reflectance value of about 14 to about 20%.

17. The composition of claim 16 in which the light transmission value of the platelet (b) is about 30 to about 45%, and the light reflectance value is about 14 to about 18%.

18. The composition of claim 17 further comprises at least one supplemental component (c) which is a non-interference platelet component having a light transmission value of less than about 20%.

22. The composition of claim 18 which is a water and silicone emulsion.

23. The composition of claim 22 which is a water-in-silicone emulsion.

24. The composition of claim 22 which also comprises at least one silicone elastomer.

19. A topical liquid composition comprising (a) a solid glass sphere;

and (b) a non-interference platelet having a light transmission value of about 20 to about 70% and a light reflectance value of about 10 to about 14%.

20. The composition of claim 19 in which the light transmission value of the platelet (b) is about 20 to about 30% and the light reflectance value is about 10 to about 12%.

21. The composition of claim 19 which further comprises at least one supplemental component (c) which is a non-interference platelet component having a light transmission value of less than about 20%.