Description-Contains 20% pure vitamin C-Hypoallergenic ampoule to brighten skin and smooth rough skin-Ampoule with less stimulation while maintaining the proper level below pH 4.0-A refreshing ampoule with a watery texture that improves the stickiness and heaviness of vitamins-Effect of improving spots, freckles, and blemishes Suggested Use1.When using pure vitamin C products for the first time, you may feel a slight tingling.2. It is normal to feel warm when it comes in contact with your skin.3. Do not use after acne extrusion or dermatology procedures as strong irritation may be felt.4. Vitamin C is recommended to be used twice a day in the morning and in the evening, and it is recommended to pay attention to UV protection in the morning.5. Do not use with products containing chemical exfoliating ingredients such as AHA, BHA, and retinol. (Make sure there are no ingredients that will be irritating when using the first step products such as cleanser and skin.)6.The recommended period of use for True Care Vitamin C Ampoule is 2 months after opening.7.One of the characteristics of vitamin C is that it is vulnerable to light and air and oxidizes rapidly. It is a stabilized product to some extent, but there is a possibility of oxidation.