Primatrice 2 sets New / Unused 1817 Carbonic Acid Pack Purchased 2025/12 How to use: Before use, it is recommended to chill the gel pack in the refrigerator. Cool your face. Pour all of the second agent packet into the container, then add one packet of the first agent. Mix well with the included spatula for about 10 seconds. Quickly apply 1-2mm thick to the entire face with the spatula. Leave on for at least 30 minutes, or preferably for about 3 hours, then remove with a spatula, etc. Wipe off further, and after wiping, prepare your skin with lotion, etc. To experience sufficient effects, it is recommended to perform intensive care 4-5 times a week for the first month, and then use it at a pace of 2-3 times a week.