Session1-7

[PP07] Evaluation of the distribution state of UV absorbers in applied sunscreen layer by infrared imaging microscope and development of a new in vitro SPF evaluation method

*Akihiro Kuroda^1,4, Miyuki Fujishiro^2,4, Shoichi Yahagi^3,4, Kouichi Asakura⁴ (1. Kuroda Consulting Inc. , 2. NIKKOL GROUP, NIKKO CHEMICALS CO., LTD, 3. NIKKOL GROUP, NIKODERM RESEARCH INC., 4. Keio Univ.)

Keywords:infrared imaging microscope, in vitro SPF evaluation method, rotating-rubbing process