Experts have found that people of different ages have different skin characteristics. For example, the skin before puberty is mostly neutral skin; during puberty, the secretion of sebaceous glands is enhanced, and the skin is mostly oily; after puberty, the skin is mostly mixed skin; after the age of 35, the skin will gradually age and become dry skin.
Reader comments
I especially like the introduction about soap in the book, "Many people think of soap as just a cleaning product, but from a scientific classification point of view, it is an indispensable and longest-used cleaning cosmetic in people's daily lives." This sentence gave me a new understanding of soap. My girlfriend loves using soap, so I have to buy a clear beauty soap for her!
I especially like the introduction about soap in the book, "Many people think of soap as just a cleaning product, but from a scientific classification point of view, it is an indispensable and longest-used cleaning cosmetic in people's daily lives." This sentence gave me a new understanding of soap. My girlfriend loves using soap, so I have to buy a clear beauty soap for her!