● How to Use At the end of your morning and evening skincare routine, take a small pearl-sized amount onto your fingertips and gently apply it to areas of concern for wrinkles, such as around the eyes and mouth. If using in the morning, please use a cosmetic product with UV protection after application to protect the effects of retinol. ＜How to Open＞ 1. Open the cap and discard the blue ring. 2. Set the cap straight onto the tube and screw it in until the uneven part at the base disappears. 3. When you remove the cap, the inner plug is set. Precautions for Use Be careful not to get it in your eyes. After use, wipe the mouth of the tube container clean and close the cap tightly. Do not place it in direct sunlight or in a place with high temperature and humidity. If you have had problems with products containing retinoids in the past, or if you are prone to skin problems, please refrain from using this product. When using for the first time or when your skin is sensitive, it is recommended to gradually increase the frequency of use, starting with only at night every 2-3 days for the first two weeks, and then every night for the next two weeks. When using in combination with other products containing retinol, avoid using multiple products at once, and use one product at a time while observing your skin condition. Please use the product correctly, following the recommended frequency and amount of use. If it is your first time using it on your neck, please follow the above precautions as you would for your face. If you have experienced problems on your face, do not use it on your neck. If any problems occur, discontinue use on that area (face, neck). Thank you very much! Thank you for viewing. Immediate purchase is welcome!