2. The performance of facial aging, the comparison with young faces, and the standard design scheme;
3. Types and injection skills of facial injection fillers;
4. Product classification (the distinction of injection site, injection level and injection effect between hyaluronic acid collagen and microcrystalline porcelain);
Training skills: including forehead filling, eyebrow lines, temple depression, decree lines, Li Souris lines, mouth lines, puppet lines, nose filling, chin filling, lip augmentation, tear removal, eye socket depression, etc.
Injection process of whitening needle and injection technology of fat-dissolving needle