It is a reddish formulation due to various plant extracts, not artificial coloring matter. It is a water-skins formulated to absorb moisture without stickiness. Helps to balance the pH balance after chemical filling.A pH of 5.5 (± 1) with a slightly Acidic toner helps to maintain a comfortable skin condition. All ingredients EWG green grade, you can use with confidence in sensitive skin. You can use it as a toner to wipe off, or you can use it as a toner pack by soaking it on a cotton swab. How to use : 1. Before using the mask sheet, remove the corners and apply the ampoule essence to the area where you need to soothe. (You can also apply it on your neck, arms, legs, etc.) 2. Remove the mask sheet and attach it evenly on your face. 3. Wait 10-20 minutes and remove the mask sheet. 4. The remaining ampoule essence on the face is absorbed by tapping lightly.