◇Be careful not to get it in your eyes. ◇ After use, wipe the mouth of the tube clean and close the cap properly. ◇ Do not place in direct sunlight or in hot and humid places. *If you have had trouble with products containing retinol, or if you are prone to skin problems, please refrain from using this product. *When using for the first time or when the skin is sensitive, it is recommended to gradually increase the number of times of use, such as every 2-3 days for the first 2 weeks, only at night, and every night for the next 2 weeks. *When using in combination with other products containing retinol, avoid using multiple products at once, and use each product while observing the situation. * Please use correctly by observing the number of times and amount of use.