Material that does not irritate the skin. Because it directly contacts the skin, natural cotton is the best choice. The touch should be soft and comfortable; at the same time, avoid the addition of any chemical substances, such as fluorescent agents. The size should be the correct way to pick up the cotton pad. The index finger and ring finger are used to cover the cotton pad with the middle finger. This action is the most convenient to control the force and direction. Each person ’s finger length is different. it is good. The thickness should be moderate. Don't use too thin cotton pads for fear of wasting care products. The cotton pad used for skin care must have a thickness of at least 3 cm, so that the amount of lotion absorbed during wiping is sufficient, not only the skin feels very comfortable, but also does not cause irritation to the skin due to repeated rubbing, such as insufficient thickness of the cotton pad At the time, two or more pieces can be combined for use. The density must be sufficient. The density of the cotton pad is strong enough to not break when the skin is wiped, causing the cotton wool to fall or remain. Before using, you can gently pull on the cotton pad test with your hand. The broken cotton pad easily indicates that the density is not enough.