How to use glycolic acid toner under your armpits
If you want to apply glycolic acid toner to your armpits, the first thing to do is to clean your armpits. Wash your armpits lightly with warm water and mild soap to remove dirt and sweat, and then wipe dry with a clean soft towel to ensure that your armpits are dry.

Take an appropriate amount of glycolic acid toner on a cotton pad or palm. If using a cotton pad, soak the toner evenly; if using the palm, gently spread the toner evenly.

Gently apply a cotton pad dipped in toner or a palm coated with toner to the underarm skin in circles. The action should be slow and even, so that the toner is fully covered all over the underarms. Be careful to avoid damaged, allergic or inflamed skin areas to prevent discomfort.

Apply the toner and wait for a few minutes until the skin is fully absorbed. Avoid contact with water or wipe your armpits during this period to ensure that the toner is effective.

Start using glycolic acid toner under your armpits, and the frequency should be low, such as once every two to three days. After the skin gets used to it, you can gradually increase it to once a day depending on your skin condition. However, if you feel skin discomfort during use, such as tingling, redness and swelling, you should stop using it immediately and consult a professional.