Recent in Sun Care (page 6 of 8)

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.

Transparent, Water-resistant Sun Care Formulations Developed

Ashland Specialty Ingredients has launched water-resistant sun care formulations that are transparent on skin, even in the presence of water.

Lab Lessons—Wise Words From the Bench With 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.

Sunscreen, Actives Stabilizer

The HallStar Company will showcase recent innovations using its ethylhexyl methoxycrylene photostabilizer, which stabilizes sensitive ingredients and enables sunscreen formulators to meet and exceed international requirements for sun care.

Beyond the Obvious

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.

Developing Sunscreens for the Preventive Treatment of Photodamage and Premature Aging

This article reviews the mechanisms of ultraviolet radiation insult to skin and explains the formulation of sunscreens to protect against this damage. Further, since the efficacy of combinations of UV filters will vary with formulation base, the formula vehicle and form are discussed, as well as an overview given of typical sunscreen efficacy tests performed prior to production.

Challenges in Sun Care Formulating

Sun care formulating poses several challenges to product developers. Cosmetics & Toiletries recently asked, “What are the biggest challenges in sun care formulating?” Following are your responses.

Comparatively Speaking: SPF vs. FEF

Here, industry expert Tony O'Lenick asks Thomas O'Lenick, PhD, to explain the difference between SPF and FEF, including a discussion on how a formulator can adjust the formulation for higher SPF and FEF with the same amount of actives.

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