ABSTRACT
Outline 142
Introduction 142
Japanese Skin Characteristics and Attitude to UV 143
The Sunscreen Characteristics Desired by Japanese 147
The Regulation of Sunscreen Products and the Development of
UV-Protective Agents 148
Development of Effectiveness, Labeling, and Testing of Sunscreen
Products in Japan 154
SPF Testing Methods in Japan 154
Measurement Standards for UV-A Protection Efficacy in Japan 157
Development of Sunscreen Labeling for UV Protection
Efficacy in Japan 164
Problems for the Future 167
References 169
OUTLINE
There is now worldwide awareness of the chronic and acute damage to human
skin caused by the ultraviolet (UV) rays in sunlight. Nevertheless, people of
different nationalities have differing skin responses, differing concerns about
the consequences of exposure, and differing attitudes to suntan and sunburn.
Surveys show that Japanese women are most anxious about pigmentation, so
their prime expectation of sunscreen products is to prevent skin pigmentation.
Pigmentation is caused by not only UV-B but also UV-A, so sunscreen products
for the Japanese market should have both UV-B and UV-A protective potencies.
