Old Beijing Mugwort Foot Patch is a product that detoxifies and improves body moisture by accelerating body metabolism. This product mainly acts on the soles of our feet. Generally speaking, The Old Beijing Mugwort Foot Patch cannot be attached to the navel, because there are multiple body reflection areas on the soles of the feet. It can have a better effect when applied under the soles of the feet, and the skin on the soles of the feet is thinner, so it is better absorbed. If it is applied If it is applied to the belly button, it may not have the desired effect, and it may also cause sensitivity and redness in the skin around the belly.