Intrinsic factors affecting skin absorption
The stratum corneum is too thick The skin is mainly composed of epidermal cells, dermal cells and subcutaneous tissues. The stratum corneum cells are the main components of epidermal cells. The stratum corneum is an aging tough cell that has a certain barrier to skin oil, but too thick the stratum corneum easily affects the skin. It absorbs nutrients, and the thinner the stratum corneum, the easier it is for foreign substances to penetrate and absorb.
The skin has less water content Less skin sweat, dry skin, insufficient oil secretion, easy skin clogging, resulting in poor skin absorption; and the more water content of the skin, the stronger the absorption capacity.
The pores shrink or block
The pores of the skin are common openings in hair follicles and sebaceous glands. They are the channels through which the skin excretes sebum metabolites. If the pores are in a contracted state or the pores are clogged, the absorption of the skin will be greatly affected. As the pores expand, the absorption capacity increases and is expelled. The ability will also increase, so you should use warm water to clean the face to ensure pore cleansing.
4. Local skin temperature is low
The principles of thermal expansion and contraction also apply to the skin. The low skin temperature causes the blood circulation of the skin cells at the end of the skin to be slow, the absorption capacity of the skin is correspondingly weakened, the local skin temperature is increased, and the skin absorption capacity is enhanced, so the winter and early spring are relatively cold. When using skin care products during the season, you should rub your hands and massage your face to help absorb the skin.
5. Skin damage
When the damaged skin is damaged, the barrier function of the skin is destroyed, the absorption capacity is enhanced, and harmful substances are more likely to invade the body.
External factors affecting skin absorption
1.Material type The skin is rich in oil, fat-soluble substances are more easily absorbed by the skin, and water-soluble substances are more difficult to be absorbed by the skin.
2. Material concentration and skin contact time
The higher the concentration of the skin care product used, the better the absorption of the skin, the longer the skin contact time, the higher the absorption rate. If a mask is used, the temperature in winter is low, the absorption of the skin is not good, and the masking time can be extended by an appropriate amount.
3. Material form
Gas substances such as oxygen and carbon dioxide can be absorbed through the skin in small amounts. Powder, difficult to absorb. The ingredients in the cream can be absorbed in small amounts. The ingredients in ointments and plasters (pastes) are easily absorbed by the skin.