The 145th Annual Meeting of the Pharmaceutical Society of Japan (Fukuoka)

Organizer: Takashi Sato, (Tokyo Univ. Pharm. Life Sci.) Yoshihiro Tokudome (Grad. School Saga Univ.)

Cosmetics used in our daily lives must comply with the Act on Securing Quality, Efficacy, and Safety of Products Including Pharmaceuticals and Medical Devices (PMD Act) in terms of efficacy, safety, and quality, ensuring that cosmetic products are beneficial to consumers while minimizing risks. Extensive science-based research is conducted to convey the value of these products to consumers. There are numerous similarities between research in cosmetology and pharmacology.
In this joint symposium with the Japanese Cosmetic Science Society, we will focus on the stratum corneum (SC), which is the outermost layer of the skin and directly applied with cosmetics. First, we will introduce the definition of cosmetics based on the PMD Act and highlight the importance of SC research in the cosmetic field. Next, we will explain the components and structure of the SC, which are crucial for a "healthy SC" that contributes to barrier function and optimal skin texture, from macro to micro levels. Finally, we will discuss ingredient delivery technology to the skin.