Most products on the market have a shelf life. Warm baby is a product with heating function. When using a warm baby, the warm baby will emit a lot of heat. It is basically safe to use warm babies during the shelf life. If it expires, the ingredients in the warm baby may not be so stable, the heating time may be shortened, or the temperature will be higher when used. Therefore, it is recommended that warm babies who have passed the shelf life be used with caution.

Tips You can stick the expired warm baby on the bed before going to bed and tear it off when sleeping. This way of keeping warm is also more appropriate.

2 What is the black powder in the warm baby? The black powder in the warm baby is the heating material of warm baby, which is mainly composed of activated carbon, vermiculite and iron powder.

Warm baby consists of heating material, gelatin layer and non-woven bag. When the baby heater is used, the package is torn, the outer bag is removed, and then the inner bag, that is, the visual non-woven bag, is exposed to the air, so that oxygen in the air will pass through the non-woven bag and contact with iron powder. After that, under the catalysis of water and salt, iron powder will undergo oxidation reaction and become iron oxide. The oxidation reaction is the same as that of magnesium metal, so it will release heat after contact, which makes people feel warm.

Can you keep your baby warm and get rid of moisture? There is no such effect.

Warm baby is a kind of warm paste. Sticking a warm baby to the body surface can warm the body and drive away the cold. When sticking a warm baby, a thin layer of sweat will appear on the body surface. This is because the warm baby is stuck in the closed position and the heat dissipation is not very good. So the temperature of warm baby will be much higher than other places. When the body feels hot, it will stimulate sweat glands, which will lead to sweating. So sticking a warm baby will feel warm and sweat, but it will not remove moisture. You can also drink red bean and coix seed water and wax gourd lotus leaf tea to get rid of dampness.

Is it useful to warm the baby for aunt?

Warm baby is attached to close-fitting clothes, which has the effect of reducing fever. Using warm baby in the abdomen during menstruation can play a role in reducing fever and relieve dysmenorrhea caused by uterine contraction during menstruation. Women's pelvic cavity is prone to congestion during menstruation. Proper use of warm baby can accelerate venous return, reduce pelvic congestion and congestion, and relieve pelvic and lumbosacral pain. However, it should be noted that warm baby is a hot item. When using warm baby, it is recommended to stick it on the outside of underwear, not on the skin. And don't warm the baby for too long, and it's best to avoid it after falling asleep at night during menstruation to prevent cryogenic burns.