The pH of human skin typically falls between 4.7 and 5.75, making it slightly acidic. This acidity is crucial for maintaining the skin's protective barrier and inhibiting the growth of harmful bacteria. While the average pH of skin is around 5.5, it can vary depending on factors like age, location on the body, and individual health conditions.
For example, the skin on the face tends to be slightly more acidic than the skin on the rest of the body.
The pH of skin can also be influenced by environmental factors, such as exposure to harsh soaps, detergents, or certain cosmetic products. It's essential to use skincare products that are formulated to maintain the skin's natural pH balance.