1. be careful not to touch the eye, as with most compounds with vitamin a acid. If contact with eyes will cause irritation of pain. Red eye. Inflammation of the eye easily. When exposed to wash with clean water immediately.
2. do not eat, and should keep them out of children's hands that might grab the handle easily.
3. people who have an allergic reaction to chemicals should be tested easily by melt water and thin on the skin. If allergic reaction occurs, avoid using or wearing gloves before use every time.