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 combines with protein of skin epidermis, it is easy to trigger the whole antigen of 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.

The direct application of aloe juice can not only moisturize the skin, but also achieve the effect of skin care. The reason is very simple. First, the concentration of effective components is not enough and the effect is very small. Secondly, the molecules are too large to be absorbed. Therefore, natural skin care ingredients are only effective if they are eaten or applied to the face after industrial extraction.

Extended data:

The role of aloe vera:

1, anti-inflammatory

Anti-inflammation is an important function of aloe. Whether it is burns, physical injuries, corrosive chemical injuries or inflammation caused by ultraviolet rays and thermal radiation, aloe gel has analgesic and anti-inflammatory effects. Experiments show that the efficacy of anti-inflammatory drugs made of aloe gel is equivalent to that of anti-inflammatory drugs synthesized by modern chemistry, while aloe gel does not contain harmful components and has no side effects on human body.

2. Wound healing

Another important function of aloe vera is to promote wound healing. Aloe vera has remarkable efficacy in promoting the healing of wounds and ulcers. Wound healing is the main problem when any part or tissue on the body surface is injured, and aloe gel can participate in this healing process.

References:

Xinhuanet-Female white-collar workers turn "Guan Gong" by applying fresh aloe to their faces.

References:

People's Network-The Function and Efficacy of Aloe Vera Anti-inflammatory, Antibacterial and Detumescence