Body lubricants refer to preparations that are professionally designed for the human body and have a lubricating effect. Currently commonly used body lubricants, mainly for sexual lubrication. The PH value of human lubricant is about 5 to 7, belonging to the weak acidic, pH and vaginal environment is basically the same, you can avoid the vagina to avoid the impact of the vagina, so as not to cause the vaginal flora imbalance. Good human lubricant is characterized by: tasteless, odorless, colorless, no greasy feeling. The main component of human lubricant is glycerin and its auxiliary components, generally no obvious harm to human health, so the applicability of human lubricant is relatively wide, the application is relatively safe.