Microemulsions for Sprayable Delivery and Other Topics: Literature Findings

By: Charles Fox, Independent Consultant

Posted: March 30, 2010, from the April 2010 issue of Cosmetics & Toiletries.

page 6 of 6

The emulsion blend offers a mild, vegetable-derived, pre-dispersed vehicle for actives, perfumes and emollients, leading to a significant reduction of mechanical and thermal energy and allowing for cold process formulations. This technology finds uses in market segments such as sun care, antiaging, skin care and pharmaceuticals.

Cleansing with extended fragrance: Henkel AG & Co. KGaA disclosed porous polyamide bead-containing hair and body cleaning agents with extended fragrance effect.¹⁶ The cleansers contained 0.05–40% w/w surfactant(s), 0.0001–5.0% w/w fragrance and 0.1–10.0% w/w porous polyamide beads. The beads were characterized by: a medium particle diameter of 1–30 µm, a specific surface according to a BET of 5 m2/g or larger, oil absorption capacity (boiled linseed oil) of 200 mL/100 g or larger, crystallinity (DSC measurement) of 40% or larger and a 1.0:1.5 ratio of medium particle diameter to average medium particle diameter. An example is shown in Formula 4.

Reproduction of the article without expressed consent is strictly prohibited.

References
Sent e-mail to CTauthor@allured.com.
1. WO 2009 99,194, Skin whitening agents comprising thiazolamine derivatives or analogs thereof, Shiseido Company Ltd., Japan (Aug 13, 2009)
2. T Sekine et al, Skin permeation of soy derived peptides as cosmeceuticals, Daizu Tanpakushitsu Kenkyu, 11 127–131 (in Japanese) (2008)
3. X Gu et al, In vitro permeation characterization of repellent picaridin and sunscreen oxybenzone, Pharmaceutical Development and Technology, (in English) 14(3) 332–340 (2009)
4. CG Burkhart et al, Dihydroxyacetone and methods to improve its performance as artificial tanner, Open Dermatol J, 3 42–43 (2009)
5. Heuy-Ling Chu et al, Effects of selected organo-sulfur compounds on melanin formation, J Agric Food Chem 57(15) 7072–7077 (2009)
6. US 2009 202,458, siRNA-mediated gene silencing technology to inhibit tyrosinase and reduce pigmentation, Avon Products Inc., USA (Aug 13, 2009)
7. KR 2009 79,413, Preparation of DNA fragments from fish semen or egg by enzymic hydrolysis and their use for skin care, Jung, Rae Jun, S. Korea (Jul 22, 2009)
8. JP 4,321,957, Hair nourishments containing Indigofera tinctoria extracts, Shiseido Co., Ltd., Japan (Sep 11, 2009)
9. JP 2009 191,017, Emulsified hair cosmetic compositions, Shiseido Co., Ltd., Japan (Aug 27, 2009)
10. JP 2009 184,975, Water-in-oil emulsion makeups with spacial effect and comes-off protection properties, Kosei Co., Ltd., Japan (Aug 20, 2009)
11. WO 2009 97,951, UVA filter based on ascorbic acid derivatives and their use in cosmetic hair and skin compositions, Merck GmbH, Germany (Aug 13, 2009)
12. Photostabilization of cosmetic UV filters, IP.com Journal 8(9B), 17, No. IPCOM000174517D (in German) (Sep 12, 2008)
13. WO 2009 99,007, Silicone compounds for cleansing composition having both excellent foaming properties and detergency, Shiseido Company Ltd. and Dow Corning Toray Co., Ltd., Japan (Aug 13, 2009)
14. R Graf et al, Antioxidative power of formulations over life time: Unique active superior than vitamins, SÖFW 134(9) 52, 54–56, 58, 60 (2008)
15. J Payne et al, Microemulsions as sprayable delivery systems, SÖFW 134(9) 65–66, 68 (2008)
16. DE 102,008,008,754, Porous polyamide bead-containing hair and body cleaning agents with extended fragrance effect, Henkel AG & Co. KGaA, Germany (Aug 13, 2009)