Materials: Glycerin: Phoenix Glycerin No. 1 produced by Shanghai Pechoin (netizen’s experience), or American skin care glycerin LIVEDUN are acceptable. It is recommended to buy it in supermarkets, as there are many fakes online. White vinegar: Be sure to use the kind with the "Pure Grain Brewing" logo. White vinegar: glycerin: pure water = 1:2:4 Note: The ratio should be as accurate as possible. For energy cups, try to use a measuring cup. Don’t be lazy. Mineral water: Evian brand. Spray bottle: available at Watsons. How to use: 1. After washing your face, spray the mixture onto your hands with a sprayer. Remember to use your hands, and then pat your forehead, cheeks, chin with both hands... Do not use it in your eyes. If there is a little irritation the first time, it is because your skin has not adapted to it, so don’t worry. The first dose should be small, one spray is enough. 2. After taking the photo, massage your face with lotion. The brand of lotion is not limited. Remember: This method can only be used at night, never use it during the day.