They are:? Four introduced species: restylane, Yiwan, Ailiwei and Qiaoyadeng; Eight domestic species: EME (Yimei), RunBai Yan, Bonida, Haiwei, Yan Shu, FACILLE Fasili, Aifulai and Singfiller.

According to the different components, it can be divided into the following three categories:?

1, cross-linked short-acting hyaluronic acid, commonly known as "pure hyaluronic acid", is mainly composed of "non-animal-derived hyaluronic acid+cross-linking agent", and the representative brands are Swiss blue and Yifan.

2. Non-crosslinked intermediate hyaluronic acid, that is, "impure hyaluronic acid", is mainly composed of "hydroxypropyl methylcellulose+non-animal hyaluronic acid+balanced salt solution", representing the brand, EME (Yimei)? .

3. Non-crosslinked long-acting hyaluronic acid, which also belongs to "impure hyaluronic acid", is mainly composed of "hydroxypropyl methylcellulose+non-animal-derived hyaluronic acid+polyvinyl alcohol microspheres+balanced salt solution", the representative brand, Bonida.

The difference between the three is that:

Impure hyaluronic acid can last longer, but in terms of composition, it lasts because of the addition of non-degradable components. Pure hyaluronic acid does not last long, but it can be completely degraded and absorbed by human body. Therefore, the longer the pursuit, the better. We must pay attention to the difference.