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Type: Article
Literature/Data
Technically Speaking: Solid Lipid Nanoparticles in Sunscreens and Other Topics
The following column provides technical and regulatory updates in sunscreens, oral care, makeup and packaging, among other topics.
Sun Care
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.
Sun Care
Formulators Forum - Sunscreens: Current Issues and Controversies
Like you, I have attended an astounding number of scientific conferences and have read seemingly unending technical papers dealing with what most of the time are topics of interest to cosmetic chemists. While we always can learn from these meetings and articles, it seems to me that there is a real lack of technical controversy. We sit and quietly accept what is heard as gospel. While we may not agree, we nevertheless just sit back and don’t ask the hard questions. Does this make sense? Was the test design reasonable? Did they use the proper controls?
Sun Care
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.
Sun Care
Formulating Forum: ‘Retrofitting’ Sunscreens to Market Demands
This article briefly reviews sunscreens raising recent concern and related regulatory actions. It also proposes approaches to adapt formulas to the limitations imposed by both regulations and market demand.
Literature/Data
Technically Speaking: SPF in Relation to Sunscreen Application In Vivo
The following column discusses the latest technological advancements in the fields of hair care, skin care, oral care, sunscreen, color cosmetics and more.
Efficacy
Wet Skin Factor for Sunscreens: An In vitro Method, Part II
Sunscreens designed for application to wet skin are popular in part due to convenience, skipping the drying step completely. In relation, these authors propose a new in vitro test to compare the wet skin factor of sun care products. Here, 20 products were tested and compared according to several conditions in order to define the best parameters for the method.
Sun Care
fulfilling the dream of more natural sunscreens – with Antaron™ eco ethylcellulose
Antaron™ eco ethylcellulose is based on sustainably sourced, zero-deforestation, wood-derived cellulose and is made in a water-based manufacturing process. It provides excellent water resistance in light feeling sprays and emulsions.
Sun Care
Read the Label: Avène Ultra-light Hydrating Sunscreen, Face, SPF 50+
This month, we welcome back our regular "Read the Label" contribution from Susan Raffy, of Susan Raffy Consulting, to review the label claims and ingredient listings of new products. This month features the Avène Ultra-light Hydrating Sunscreen Lotion, SPF 50+, for Face.
Efficacy
Wet Skin Factor for Sunscreens: An In vitro Method, Part I
Sunscreens designed for application to wet skin are popular in part due to convenience, skipping the drying step completely. In relation, these authors propose a new in vitro test to compare the wet skin factor of sun care products. Here, 20 products were tested and compared according to several conditions in order to define the best parameters for the method.
Sun Care
Read the Label: Vacation Brand Classic Whip SPF 30 Sunscreen Mousse
"...I recently picked up Vacation’s Classic Whip SPF 30 Sunscreen Mousse. Admittedly, I came for the SPF, but I stayed for the unique mousse texture..." writes Alison Wery, in her latest Read the Label column. Read on to learn about this formula design.
Magazine
Sunscreen Labeling, REACH and DEFRA, CMR Process, Product Safety and More
This article discusses concerns over sunscreen labeling and actions to address them. It also describes regulatory changes, primarily in the UK, in terms of REACH and its involvement with DEFRA, the upcoming CMR process, UK product safety reviews and more.
Sun Care
New Age of Sustainable Sunscreens: Formulating for Modern Sun Care Trends
Sunscreen developers are faced with fast-moving trends, environmental considerations and regulatory hurdles. This column describes ingredients and methods to create environmentally friendly products while addressing key skin concerns.
Literature/Data
Patent Picks—Sunscreen Particles, Delaying Senescence, Skin Repair and More
Chosen biweekly for their relevance to personal care, Patent Picks are taken from publicly available sources. This edition features patents related to sun protection materials, skin repair and sun care formulation technologies.
Regional
Importing Cosmetics into Japan, Part 2: Distributor Licensing and Sunscreens
This column is the second in a two-part series on importing cosmetics into Japan. It discusses the requirements for cosmetic manufacturers and distributors in more depth than the first part, and provides a closer look at sunscreen requirements in Japan.
Efficacy
Photostability Test for Additional Sunscreen Claims, Part III: New Claim
Proposed here is an in vitro method, based on UV transmission measurements at two irradiation doses, to test and rank sunscreens based on their photostabilities. This approach was used to assess some 107 sunscreens and shows how, by strictly controlling key parameters, comparisons between the photostabilities of products can be made, with potential for new label claims.
Efficacy
Photostability Test for Additional Sunscreen Claims, Part I: Protocol Setup
Proposed here is an in vitro method, based on UV transmission measurements at two irradiation doses, to test and rank sunscreens based on their photostabilities. This approach was used to assess some 107 sunscreens and shows how, by strictly controlling key parameters, comparisons between the photostabilities of products can be made, with potential for new label claims.
Sun Protection
Improving the UV Exposure of Sunscreen During In vitro Testing
In any sun protection evaluation method, an irradiation step is required to determine the photostability of the UV filters in a product. The aim of this study was to identify key parameters involved to improve this UV exposure. Here, the authors consider temperature at the substrate surface, air flow influence and beam uniformity during UV exposition.
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