Foot stickers were originally used to stick on the soles of feet. Because the skin on the soles of the feet is very thin, and there are many foot reflex zones and acupoints, it is easier to be digested and absorbed by the human body.
In addition, the fat layer in the abdomen or other parts is very thick, and there are no reflection areas and acupuncture points. Moreover, the skin of the navel is uneven and it is not easy to stick tightly. The effective ingredients in the foot patch can't penetrate the fat layer, which will affect the effect.
In addition, the foot patch is powder, which is not very delicate, easy to block pores and easily cause allergies, so it is not recommended to use it at the navel.
Extended data:
Causes of blackening of wormwood foot patch after use
The blackening of wormwood mats is a physical phenomenon. The reason is that the foot patch contains some water-soluble ingredients. When sweat or oil metabolized by human skin erodes the foot patch, it will change color. Then, these will adhere to the mat, and naturally, the mat will turn black.
Therefore, whether the wormwood foot patch is blackened is not because of the detoxification effect. The detoxification effect of wormwood is closely related to the ingredients of wormwood foot patch.
Like the old Beijing wormwood foot patch, because there are many kinds of herbal extracts such as wild wormwood leaves, angelica dahurica, dried ginger, salvia miltiorrhiza, angelica sinensis, etc., the detoxification effect is very good. The dried ginger is old ginger, which can further stimulate the foot acupuncture points on the basis of bamboo vinegar and help the effective components to absorb and circulate.