What effect does pH have on the skin?

First of all, we need to know the effect of PH value on skin. The PH value belongs to weak acidity, which hinders the development and reproduction of bacteria. The PH value of healthy and normal skin is between 5.5 and 6.5. This weak acidity has the function of neutralizing alkalinity and preventing skin damage.

Generally speaking, the PH value of sweat is between 4 and 5. After sweat comes into contact with the skin, the PH value of the skin will increase and become alkaline, and the function of inhibiting bacterial derivatives on the skin surface will be weakened. Therefore, symptoms such as dermatomyositis and macula are the most common in summer.

On the other hand, acne will get worse in summer. Because the PH value of oily skin is high and alkaline, it has no inhibitory effect on cells, and with the help of sweat, bacteria breed out of control. At the same time, sweat swells the stratum corneum, narrows various pores on the skin surface, and easily accumulates sweat and dirt in the pores. So under the influence of various internal and external factors, acne is rampant.