Present microneedles are manufactured by pyramid molding method, which is cutting the center part of a stretched spherical shape. This particular shape makes it difficult for users to apply it on their face due to the thick blunt end of the needle. Containing 175 dissolving microneedles, very fine, tiny needles are used to help treat cystic or nodular acne with various active ingredients to cure the acne. Precautions: 1. Do not use this product immediately after opening the product. 2. Micro-needle acne sticks should be pressed vertically after sticking, do not squat up and down. 3. There may be a foreign body sensation when you start using it. It will disappear in about 5 minutes. Please feel free to use it. 4. Please use caution when there is a skin disease such as a wound or dermatitis on the skin of the site of use.