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Home » Japan L’Oréal Co., Ltd. L’Oréal Research & Innovation gave a lecture at the 123rd Dermatology Congress on th e title “UV protection for people with acne”

Japan L’Oréal Co., Ltd. L’Oréal Research & Innovation gave a lecture at the 123rd Dermatology Congress on th e title “UV protection for people with acne”

Japan L’Oreal Co., Ltd.
L’Oréal Research & Innovation gives a lecture on “UV protection for people with acne” at the 123rd Dermatology Congress
L’Oréal Research & Innovation Japan (Research Institute: Kawasaki City, Kanagawa Prefecture, Director: Amit Jayaswal, hereinafter referred to as R&I Japan), the research and development arm of the world’s largest cosmetics company L’Oréal Group in Japan, will hold the 123rd Dermatological Congress (June 2024). A seminar was held jointly with La Roche-Posay, a brand of the L’Oréal Group, in Kyoto (Kyoto) from March 6th to 9th, and researcher Toru Koike gave a lecture titled “UV protection for people with acne.” I did.
Acne is one of the top skin concerns among young people, and it has been reported that approximately 90% of teenagers experience acne1). Acne during adolescence occurs as a result of increased sebum secretion due to actively secreted sex hormones and clogging of pores due to abnormal keratinization. Acne in adults, which has been increasing recently, is thought to be caused by hormonal imbalance due to irregular lifestyles and stress.
Ultraviolet B rays cause sunburn on the skin and are thought to be a remote cause of skin cancer as they damage DNA, but ultraviolet A rays with longer wavelengths penetrate deep into the skin and cause photoaging, such as age spots, wrinkles, and sagging. It has been known to invite These UV rays also have a negative effect on acne by promoting keratinization and worsening inflammation. Therefore, UV protection is important for those who suffer from acne.
People who suffer from acne want sunscreens that are not oily, do not worsen acne, and are lightweight. On the other hand, pursuing a high UV protection effect can make the product feel heavy or give it a washed-out appearance. L’Oréal’s research results have shown that even sunscreens with the same UV protection ability will not provide the desired protective effect if the film is not uniform. In other words, the uniformity of the film formed on the skin is important in order to obtain a high UV protection effect. We have developed a sunscreen that can create a uniform film on the skin by combining a special emulsifier and water-soluble polymer using our unique technology (Figure 1). Additionally, this emulsifier has been shown to surround oil, giving it a refreshing feel and reducing stickiness and shine on the skin. Approximately 75% of the 59 people with acne who used this sunscreen for 28 days reported no irritation and less uneven skin tone, and more than 90% of them reported that their skin was less irritated and had less uneven skin tone. I would like to recommend it.
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Figure 1: Even if a formulation contains a UV protection agent equivalent to SPF 50, in an uneven film (left figure), the UV protection agent is dispersed in clumps, and even if you measure SPF, you will only get an effect of less than 30. . Adding emulsifiers and water-soluble polymers to this formulation improves the dispersibility of the UV protection agent, but it is still non-uniform (center image). Therefore, we developed a formulation that forms a uniform film by mixing an emulsifier and a water-soluble polymer, and when we measured the SPF, we found that the SPF exceeded 50 (see the figure on the right).
Sunscreens that are both protective and easy to use are expected to be accepted not only by people with acne but also by the general public, and will help improve quality of life (QOL).
1) Ghodsi, S.Z., et al., “Prevalence, Severity, and Severity Risk Factors of Acne in High School Pupils: A Community-Based Study”, J. Invest., Dermatol., 2009, 129, 2136-2141
About L’Oréal Group
For 115 years, L’Oréal has been a leader in the beauty and cosmetics industry, dedicated to meeting the beauty aspirations and needs of consumers around the world. Our purpose, “Creating beauty that moves the world,” reflects our commitment to beauty, which is to contribute through beauty to society and the environment in a sustainable, inclusive, ethical and generous manner. It is a comprehensive expression of posture. Through our diverse and wide-ranging brand portfolio, including 37 international brands, and our L’Oréal for the Future program, a commitment to sustainable development and the protection of the environment, we celebrate the infinite diversity of beauty and inspire people around the world. Delivering the highest standards of quality, effectiveness, safety, integrity and
responsibility to all of our people. With over 90,000 employees, we have a geographically balanced footprint and sales channels across all distribution networks (e-commerce, mass market, department stores, pharmacies, beauty salons, branded and travel retail). has. Group sales in 2023 amount to 41.18 billion euros. With 20 research and development centers in 11 countries around the world, over 4,000 scientists and over 6,500 digital talents, L’Oréal is committed to creating the future of beauty and advancing beauty technology. I consider it important. Click here for more information.
About L’Oréal Research & Innovation Japan
Research and development in Japan began in 1983 and currently serves as a strategic innovation hub as the L’Oréal Japan Research & Innovation Center (located in Kawasaki City, Director: Amit Jayaswal). For over 40 years, we have accumulated deep understanding and knowledge about Japanese culture, history, society, people, and ecosystem. More than 200 researchers drive upstream and downstream development in various fields and categories for L’Oréal Group brands. Representative brands include Lancôme, Shu Uemura, TAKAMI, Kiehl’s, Yves Saint Laurent Beauté, Kérastase, and Maybelline New York. More details about this release: