Glycolic Acid 30 Use Guide
As a special concentration of skin care ingredients, the correct use of glycolic acid 30 is essential. The following is a detailed explanation of the use method for you.

1. Prepare before use
1. ** Skin test **: Before officially using glycolic acid 30 in a large area, be sure to perform a skin sensitivity test. Take a small amount of the product and apply it to the more delicate parts of the skin, such as behind the ear or inside the arm, and observe it for 24-48 hours. If there are no discomfort symptoms such as redness, swelling, itching, and tingling on the application area, you can continue to use it. This step is designed to know in advance the individual's skin tolerance to glycolic acid 30 and prevent possible allergic reactions.
2. ** Cleansing the skin **: Use gentle cleansing products to thoroughly clean the facial skin, remove dirt, oil and cosmetic residues on the surface of the skin. But pay attention to avoid damage to the skin barrier caused by excessive cleaning. After cleaning, gently pat dry the face with a clean towel to keep the skin dry.

2. Frequency and dosage of use
1. ** Frequency of use **: In the early stage, because the skin needs to adapt to the stimulation of glycolic acid 30, it is recommended to use it 1-2 times a week. With the gradual improvement of skin tolerance, the number of uses can be appropriately increased according to the skin condition, but generally it should not exceed 3-4 times a week. Excessive use may lead to excessive skin exfoliation, causing dryness, redness and other problems.
2. ** Dosage **: Each time you use, take an appropriate amount of glycolic acid 30 product on your fingertips or cotton pad. Take the face as an example, generally the amount of 2-3 pumps can be evenly applied to the whole face. Note that the dosage should be moderate to avoid excessive product accumulation on the local skin and cause irritation.

3. How to use
1. ** Application method **: Apply the product evenly to the face. You can gently apply it from inside to outside and from bottom to top. Pay attention to avoid the weaker and more sensitive areas of the skin such as the eye area and lips. During the application process, the action should be gentle and avoid pulling the skin hard.
2. ** Dwell time **: The residence time of glycolic acid 30 on the skin needs to be strictly controlled. When you first start using it, you can stay for 3-5 minutes. After that, you can gradually extend the stay time according to the tolerance of the skin, but the longest should not exceed 10-15 minutes. As soon as the time is up, rinse it off thoroughly with water.

IV. After use care
1. ** Moisturizing care **: After using glycolic acid 30, the moisture loss of the skin may increase, so it is essential to carry out moisturizing care in time. You can choose skin care products containing moisturizing ingredients such as hyaluronic acid and ceramide, such as moisturizing lotion or cream, and gently apply it to the face to lock in the moisture of the skin and relieve the possible dry tightness.
2. ** Sun protection measures **: After using glycolic acid 30, the skin's sensitivity to ultraviolet rays will increase, so sun protection work cannot be ignored. After use during the day, be sure to apply sunscreen, choose products with an appropriate sun protection index (such as SPF 30 - 50), and try to avoid going out during times with strong ultraviolet rays (10 am to 4 pm). If you must go out, you can wear a sun hat, sunglasses, parasol, etc., to do a full range of sun protection.