◇If skin irritation occurs after exposure to direct sunlight, discontinue use. ◇Be careful not to get in eyes. ◇After use, wipe the mouth of the tube clean and close the cap properly. ◇Do not store in direct sunlight or in hot, humid places. *Please refrain from use if you have had problems with products containing retinols or are prone to skin problems. *When using for the first time or if your skin is sensitive, we recommend gradually increasing the frequency of use, using only at night every 2-3 days for the first 2 weeks, 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 one product at a time while observing the condition. *Please use correctly by observing the number of times and amount of use.