Patent Picks—Sugar Sunscreen, UV Microcapsules, ‘Rugby Ball’ Particles and More

By: Rachel L. Grabenhofer

Posted: January 31, 2012

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Liquid composition containing fusiform “rugby ball” particles for cosmetic use
US Patent Application 20120021030
Publication date: Jan. 26, 2012
Inventors: S Matsufuji and M Kawamoto

In view of the fact that cosmetic products require improved moisturizing capabilities with good transparency as well as a less powdery appearance, the inventors of the present invention tested numerous ingredients to be included in a liquid foundation and discovered that fusiform particles can provide liquid foundations with these desired features. Thus, this invention relates to a liquid composition, in particular a liquid foundation, for cosmetic use that contains particles having a non (hemi)spherical, fusiform shape, also referred to as a “rugby ball” shape in the patent. The liquid composition may be applied in foundations, makeup, skin care and sun care, in particular in the form of an aqueous solution, a lotion, an oil gel, an o/w or w/o simple emulsion, or a multiple emulsion. Said composition contains 5% w/w to 50% w/w of fusiform particles in a cosmetically acceptable medium, the particles being made of an organosilicone having a crosslinked polysiloxane structure.

Antioxidant compounds for antiaging, stability
US Patent 8106233
Publication date: Jan. 31, 2012
Assignee: Merck Patent GmbH

The skin has the ability to scavenge free radicals generated by external or internal stress factors but this ability diminishes with age, causing skin aging. However, according to these inventors, this can be countered by antioxidants. In addition, certain actives used in cosmetics are unstable and can cause formulating issues but a known way of addressing these issues is by adding antioxidants to the compositions. The present invention therefore relates to the use of compounds with radicals defined as antioxidants and to the corresponding processes for the preparation of these compounds. The object of this invention was to provide a composition that protects against UV rays and/or exerts a protective action against oxidative stress on body cells and/or counters skin aging.

Nongreasy, film-forming cosmetic composition with UV benefits
WIPO Patent Application WO/2012/012497
Publication date: Jan. 26, 2012
Assignee: The Procter & Gamble Company, EL Hodgson, RB Crook and NM Simpson