1. The position of the skin, from the point of view of the face, skin of the eyes and lips, is easier to absorb than other positions.
The thickness of the skin around the eyes is one third of the thickness of the skin.
2. Age and gender, absorbent ability of skin in infants and elderly people are higher than in other age groups.
3. The skin temperature. The increased skin temperature, accelerated blood circulation and increased hydration can increase the permeability of substances.
An increase in skin temperature by 1 degree Celsius can increase the absorption of active ingredients by 10 times. Therefore, the absorption rate can be improved by massaging the face with vegetable oil or composite essential oil or making a face mask.
4. The value of the pH. The value of the pH of healthy skin is slightly acidic, and to ensure the absorption of the skin of the product, the product should be close to the value of the pH of the skin.
5. Functional integrity of the skin barrier. When the barrier function of the skin is incomplete or damaged, absorption of cosmetics intensifies. Therefore, skin care products used by this problem should be soft, safe, not annoying and have a certain restorative and moisturizing effect.
6. The humidity of the stratum corneum. After the skin is softened by water, which is very moisturized, it can increase the absorption of substances. After covering the face mask for 10 minutes, massage with vegetable oil can improve the degree of moisturizing and the absorption of vegetable oil.
Initially, this is a protective barrier used to confront environmental erosion. But over time, the skin is aging, its metabolism weakens, and the protective function also decreases.