Recent in Function (page 36 of 40)

Delivering On Time, In Full and On Target: Part II

This second installment continues a discussion from Cosmetics & Toiletries magazine’s May 2008 issue and is also based on a chapter written for the book Skin Barrier: Chemistry of Skin Delivery Systems. Practical information for the cosmetic formulator regarding optimization of skin delivery has been added.

Getting Intimate with Polymers: Personal Lubricants

Personal lubricants (PLs) have gained tremendous popularity primarily because of their ability to enhance the comfort and pleasure of intimate activities. These formulated medical devices rely on polymers to deliver lubricity, viscosity and distinct rheological characteristics. Various polymer chemistries enable modern PLs to provide long-lasting lubrication and unique sensorial experiences...

Swellable, Nanoporous Organosilica for Extended and Triggered Release

Nanoporous organosilica particles were developed to swell upon the addition of organic solvents. These are evaluated here for encapsulating and controlling the release of fragrance. Slower, continuous release was observed, suggesting their ability to extend sensory benefits. In addition, the stimulated release of encapsulated lidocaine was studied, and results implicate their use to deliver cosmetic actives.

Mildness Meets Greenness

Alkyl polyglucoside surfactants are obtained from renewable, plant-derived raw materials. Compatibility test results and exemplary formulations presented here show that alkyl polyglucosides enable cosmetic chemists to formulate mild body cleansing formulations that fulfill the new “green” formulation trend and enable the formulation of alkyl sulfate-free and ethoxylate-free cleansing concepts.

Testing Polysilicone-19 for Hair Conditioning and UV Protection Claims

Polysilicone-19, a new cationic siloxane copolymer for rinse-off shampoos and conditioners, is shown here to protect dyed hair against UV fading and damage and to provide a conditioning effect.

Fragrancing Sun Care Products

Outdoor, indoor and self-tanning products have different usage profiles, thus fragrancing each product type has special considerations with respect to the overall fragrance structure and the types of characters that work best. The present article reviews fragrance structure and discusses specific considerations for each product type to assist formulators in designing successful sun care products.

Hydrophobic α-Ketoglutarate for Increased Collagen Production

A novel mechanism to increase collagen production based on improved hydroxylation of the collagen fiber is described here. In relation, the effects of a hydrophobic derivative of a-ketoglutarate on this mechanism are examined, and results indicate increases in collagen production in senescent fibroblasts in vitro. In vivo, a significant reduction in wrinkles and improvement in elasticity were observed.

A DNA Repair Complex to Decrease Erythema and UV-induced CPD Formation

The authors describe how a DNA-repair complex based on amino acids decreases UV-induced DNA damage in reconstituted human skin and reduces related skin inflammation in human volunteers.

Treating Wrinkles with Dimethylaminoethanol, Retinol and Mineral Salts

A placebo-controlled study was conducted to determine if the appearance of wrinkles on facial skin could be improved by a combination of three cosmetic ingredients: dimethylaminoethanol, retinol and mineral salts. Both clinical assessment and video analysis of cutaneous replicas showed a significant improvement of the wrinkle appearance.

Merck Launches Self-tanning and Lightening Actives

Merck has added two new actives to its RonaCare brand of cosmetic ingredients—one for self-tanning without UV exposure and one to lighten and illuminate the skin.

Ashland Adds Homosalate UVB Filter to Offering

Ashland Specialty Ingredients, a commercial unit of Ashland Inc., has added a homosalate UVB filter to its Escalol range of UV filters.

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