Woman’s skin is declining from 20 years old because of a decrease of female hormones. Therefore, natural moisturizing factors are reducing, and the skin is drying.
Then, there are gaps in horny layers. Through the gap, epidermal moistures evaporate, and ultraviolet rays irrupt into epidermis.
Dried epidermis gets to be hard and have wrinkles easily.
Keeping moistures in epidermis