Recent in Sun Care (page 8 of 10)

Read the Label: Bella B Sunny Bee Natural Sunscreen 40+ SPF

This is a liquid crystal emulsion based on C14-22 alcohols and C12-20 alkyl glucoside. Glyceryl stearate is used to reinforce the lamellar network. Beeswax, which should only be listed once, is used as a natural oil phase thickener.

Envisioning SPF

The sun care industry faces several challenges, including testing and measuring SPF, questions over the safety of nanotechnology, sunscreen stability, broad-spectrum protection, and inconsistent regulations for allowed UV filters and their combinations. Some of these challenges have plagued product developers for years, thus the industry has had time to develop the means to meet some of them. Recent work in these areas is the primary focus of this issue of C&T magazine.

Controlling Hydroxyl Radical Formulation in TiO2 Sunscreens

Titanium dioxide (TiO2) is an effective sunscreen agent but its rutile form may produce hydroxyl radicals upon exposure to sunlight. Thus, the authors use salicylic acid as a capture agent to examine the development of free radicals in solutions or creams containing TiO2. They also explain how the choice of emulsion may reduce free radical generation.

BASF Launches a UV Filter, Anti-aging Formulation Concepts, BB Cream Pigments an Under-eye Sea Extract and More

At in-cosmetics 2013, BASF Personal Care will introduce a new UV filter, a multifunctional styling agent, a renewable microemulsion, natural platelets for mineral makeup, a sea extract for under-eye and formulation concepts for anti-aging and diverse daily activities.

Wise Words From the Bench with Gavin Greenoak

After 25 years in the industry, Gavin Greenoak, managing and scientific director of the Australian Photobiology Testing Facility Pty., Ltd. (APTF), continues to strive for a better understanding of the interaction of light and the human body. Greenoak’s career began in cancer research, which has afforded him unique insight of skin biology and the effects of sun exposure.

Beyond the Obvious in Sun Care Formulating

What are the biggest challenges in sun care formulating? I asked a few colleagues, and they answered: achieving what marketing wants while complying with regulations and making sunscreens esthetically pleasing (so consumers will use them); and the lack of international harmonization in UV filters, UVA testing and labeling. These issues are not new, so why are they not yet resolved? Perhaps because regulations and consumer demand are moving targets, which are difficult to hit.

Wise Words From the Bench With L’Oréal's Claudie Willemin

Claudie Willemin sees legislative and regulatory requirements in a more positive light: as an opportunity for innovation. This attitude has built her successful career of more than 20 years in the cosmetics industry, some of which she recounts here.

Film-Formers Enhance Water Resistance and SPF in Sun Care Products

At low formulating levels, film-forming polymers can increase water resistance and enhance SPF in sun care formulations, while also imparting improved aesthetics. In the case of C30-38 olefin/isopropyl maleate/ MA copolymer, a synergistic SPF effect can be achieved with PVP/eicosene copolymer.

Sunscreen Stabilizer for Improved SPF

The photostabilizer quenches the singlet excited states to slow down photodegradation.

The Effects of Solvents on Sunscreens: A New Ester to Improve Efficiency

The present paper evaluates the effects of solvent systems on the in vivo SPFs of sunscreen formulations. Formulations incorporating identical active systems were prepared using traditional solvent systems and varying concentrations of sorbeth 2 hexaoleate, a new ester having both polar and nonpolar segments. Results indicate the ester enhances SPF in a dose-dependent manner.

Antioxidants in Sunscreens for Improved ROS Protection

In the present article, sunscreens containing the antioxidants vitamin E and diethylhexyl syringylidene malonate were tested for their efficacy in preventing UV-induced reactive oxygen species in the lower stratum corneum. The addition of the antioxidants was found to significantly improve the ability of low to high SPF sunscreens to attenuate ROS formation in UV-exposed skin.

Polycrylene for Photostabilization and Water Resistance

HallStar has created a polyester that allows formulators to combine active ingredients that have previously been considered too photo-unstable to be effective.

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