Facial silicone jar is a common cosmetic tool, which is used to massage the face and promote facial blood circulation. To prevent your hands from slipping, you can try the following methods:

1. Clean your face: Make sure your face is clean and free of any cosmetics or grease before using the facial silicone jar. This can effectively reduce hand slip.

2. Dry your hands: Make sure your hands are dry. You can dry your hands with a towel, which will increase the friction between your hands and the silicone jar.

3. Strengthen the grip strength: If you find that your hand is slippery, you can try to strengthen the grip strength of your hand. You can do some hand exercises, such as squeezing balloons or using arm strength equipment to enhance hand muscle strength and grip strength.

4. Use hand cream: Use some hand cream or hand desiccant, which can increase the friction between hand and silicone jar and reduce sliding.

Although the above methods help to reduce hand slip, hand slip may still occur. It is recommended that you be more careful when using facial silicone cans to avoid accidents.