延缓皮肤衰老是人类自古以来就热切追求的理想，也是化妆品行业发展的一个永恒主题，而评价化妆品对保护人类皮肤及延缓皮肤衰老功效的科学方法和仪器设备是行业发展的迫切需要。当今社会，科学技术迅猛发展，人们的物质文化生活水平亦随之有了一个质的飞跃，所以人们对美的追 Delaying skin aging is an ideal pursued by mankind since ancient times. It is also an eternal theme of the development of the cosmetics industry. Scientific methods and equipment for evaluating the effectiveness of cosmetics in protecting human skin and delaying skin aging are urgently needed by the industry. In today's society, with the rapid development of science and technology, people's material and cultural living standards have also made a qualitative leap so people are chasing after the United States