With the development of medical technology and the improvement of life treatment, people's concept of aging is also changing, people of all ages are constantly pursuing a young and healthy life, the use of lasers and fillers to correct facial wrinkles has become more and more common. For the use of fillers to correct facial wrinkles, the efficacy and safety have been fully established, to the extent that it is a minimally invasive treatment, due to its short operation time and rapid recovery, it is considered a very effective treatment for facial wrinkles.

Collagen is a kind of natural protein. As the main component of skin tissue, it has the advantages of good biocompatibility, degradability and low immunogenicity, and is an ideal material for correcting facial soft tissue defects. Collagen is implanted under the skin in a non-surgical way to increase the capacity of the dermis tissue, thus achieving the purpose of smoothing wrinkles, improving facial defects, and sculpting perfect skin. The medical collagen filling agent of Filaman (Changchun) Pharmaceutical Biotechnology Co., Ltd. consists of 3.5% bovine collagen It is composed of 0.3% lidocaine hydrochloride saline suspension, and is filled by injection to repair the shape and correct the contour to achieve satisfactory results. The product is eventually completely degraded in the human body, and the expected absorption time is 6-12 months.

In accordance with the requirements of the Medical Device Registration and Filing Management Measures, the Medical Device Clinical Trial Quality Management Standards, the Clinical Trial Registration Review Guidelines for Facial Injection Fillers (Draft for Comment), the Clinical Trial Design Guidelines for Medical devices, and the ethical principles of the Declaration of Helsinki of the World Medical Congress, To maximize the benefit of the subject and avoid as much harm as possible.

Inclusion Criteria:

• Age 18-65 years old (including 18 and 65 years old), regardless of gender; Intentional correction of forehead wrinkles (crow's feet);

Exclusion Criteria:

• Received bovine collagen fillers or hyaluronic acid within 12 months prior to enrollment

Facial area of calcium hydroxyapatite (CaHA), poly-L-lactic acid (PLLA) or plastic therapy

Domain therapy, or subjects who plan to receive such therapy during study participation;