The main ingredients of this product are of natural extraction. To check for allergies, test it on the inside of the arm for 10 minutes, and if no allergy reaction occurs by the next day, you may proceed to use the mask. For sensitive skin, please check with a dermatologist. If irritation occurs during use, please stop using it immediately and consult a doctor. Do not leave the mask on the skin for a period longer than its intended usage time frame. Do not use on broken, swollen or sunburned skin. If product gets into eyes, wash immediately with water. To ensure quality, please use immediately after opening the mask. Mask is not to be re-used. Keep out of reach of children.