Overnight tea has lost most of its vitamins for a long time, and protein and sugar in tea soup will become nutrients for bacteria and molds to breed. Therefore, people usually think that overnight tea can't be drunk. In fact, the overnight tea without deterioration can not only be drunk, but also has the following health care functions:

Anti-cancer and anti-oxidation: Tea will turn reddish brown after a long time, which is due to the oxidation of tea polyphenols into reddish brown tea pigments. Studies have shown that both tea polyphenols and tea pigments have strong anti-cancer and anti-oxidation effects. Although the content of vitamin C in overnight tea is greatly reduced, it still has anti-disease effects.

Hemostasis: Overnight tea is rich in acid, which can prevent capillary bleeding. If you suffer from stomatitis, carbuncle of the tongue, eczema, gingival bleeding, etc., you can gargle with overnight tea. It can also be used for bathing sores, abscesses and skin bleeding.

Mingmu: Tea polyphenols in overnight tea have antibacterial and anti-inflammatory effects. If red silk appears in your eyes, you can wash it with overnight tea several times a day.

Stop itching: Wash your hair or wipe your body with warm overnight tea. The fluorine in the tea can quickly stop itching and prevent eczema.

Hair growth: shampoo with overnight tea, and it also has the effect of hair growth and dandruff elimination. If your eyebrows are too thin, you can brush your eyebrows with a brush every night. After a long time, your eyebrows naturally become thick and bright.

Fixing teeth and cleaning teeth: after the fluoride in tea calcifies with the enamel of teeth, it will enhance the resistance to acidic substances and reduce the occurrence of tooth decay; Fluorine can also eliminate dental plaque, and it is best to rinse your mouth with tea two or three minutes after meals.

In addition to bad breath: tea contains essential oils and smells fragrant. Before and after brushing your teeth in the morning or after meals, gargle a few mouthfuls of overnight tea, which can make your breath fresh, and often gargle with tea can eliminate bad breath.

Sunscreen: If the skin is sunburned by the sun, you can gently wipe it with a towel dipped in overnight tea. Because tannic acid has astringent effect on skin, flavonoids in tea also have anti-radiation effect.

Removing fishy smell and greasy: Overnight tea also has a strong effect of removing fishy smell and greasy smell. It is refreshing to wash your hands after eating shrimps and crabs.

The use of overnight tea should be based on constant deterioration (deterioration). In summer, the temperature is high, and the tea is prone to rancidity and bad taste. If it is put on hold for more than 24 hours, it is best not to drink it, otherwise it will cause diarrhea.