Fresh aloe vera is not suitable for direct application on the face. Fresh aloe contains aloin, resin and other substances, which is called hapten in medicine. When it is combined with protein of skin epidermis, it is easy to cause allergic reaction, leading to skin allergy. Aloe juice contains a lot of vitamin B, but it is a water-soluble substance, which is difficult for the skin to absorb.

What you can eat in your stomach may not be painted on your face. The concentration of fruit acid and vitamin C in fresh fruits and vegetables is too high, which makes the skin unbearable and easily causes redness and allergies. In addition, some fruits and vegetables also contain photosensitive substances, which can also cause photosensitive dermatitis after sun exposure.

Extended data:

The role of aloe vera:

1, promoting healing

It can promote aloe healing in rats with artificial trauma and shorten the days of aloe healing in rabbits with artificial conjunctival edema. Aloe juice preparation has protective effect on skin trauma, burn and local X-ray irradiation.

2. Anti-aging

The mucus in aloe is mainly composed of polysaccharides, such as aloe mannan. Mucus is an important component to prevent cell aging and treat chronic allergies.

Mucin exists in muscles and gastrointestinal mucosa of human body, which makes tissues elastic. If mucin is insufficient, muscles and mucous membranes will lose their elasticity and become stiff and aging. If mucin is insufficient, the cells that make up the human body will gradually weaken and lose the ability to defend against germs and viruses. In addition, mucin has the function of strengthening the body and strengthening the essence.

References:

Xinhuanet-Female white-collar workers become "Guan Gong" by smearing fresh aloe on their faces.

References:

Baidu encyclopedia-aloe