1. Check whether the cosmetics are genuine, expired or deteriorated. Fake and inferior products or deteriorated products are harmful to the skin.
2. The skin is not suitable for using this product, which leads to skin allergy. It is recommended to stop using.
3. It is suggested that before using cosmetics for the first time, apply a small amount of cosmetics behind the ear to see if it will cause allergies, and then decide whether to continue using it.