The objective of this study was to evaluate the efficacy and safety of HA IDF plus (with lidocaine) injected in the nasolabial fold compared to HA IDF (without lidocaine).

The objective of this study was to confirm the superiority of HA IDF II plus (with lidocaine) injected in the nasolabial fold compared to HA IDF II (without lidocaine) in the improvement of local pain and evaluate the wrinkle-correcting effect, GAI and safety.

Inclusion Criteria:

1. Women aged between 30 and 60

2. Those whose wrinkles in the treatment area (nasolabial fold) correspond to Stage 3 or 4 in the 5-stage Wrinkle Severity Rating Scale (WSRS) symmetrically

3. Those who were informed on the purpose, method, and effect etc. of this study and signed the informed consent form

4. Those who fell under any of the following 3 cases:

   1. Surgically sterile women

   2. Women in menopause over 2 years from the last menstruation, aged at least 45

   3. Among the women meeting neither of a nor b, those who agreed to use at least 2 contraception methods specified below (one of the barrier methods must be included) until 14 days after the last treatment with the investigational medical device

      • Barrier methods: Condom, diaphragm, cervical cap (pessary), spermicide
      • Hormonal methods: Pills, injection (depot), skin patch, hormonal implant (Implanon), vaginal ring
      • Intrauterine devices (IUDs): Cooper IUD (Loop), hormonal IUD (Mirena)
      • Natural methods: Basic body temperature, ovulation period, coitus interrupts, abstinent

Exclusion Criteria:

1. Those with a skin disease (skin infection, eczema, psoriasis, rosacea, herpes etc.) in the lower 2/3 part of the face in which the wrinkle evaluation may be affected
2. Patients who had been treated for a malignant tumor within 5 years prior to Visit 2 (randomization)*
3. Women in pregnancy or lactation
4. Those with the bilirubin level exceeding 1.5x of the upper limit of normal or the ALT/AST level exceeding 2.5x of the upper limit of normal
5. Those with the confirmed infection of syphilis or HIV
6. Those who had an anticoagulant therapy or antiplatelet therapy within 2 weeks prior to Visit 1 (screening)
7. Those who used a topical preparation (steroid, retinoid) in the facial area within 4 weeks prior to Visit 2 (randomization)
8. Those who experienced a deep chemical peeling or a laser procedure (including IPL) within 3 months prior to Visit 2 (randomization)
9. Those who experienced a non-permanent filler procedure or a cosmetic surgery in the face within 9 months prior to Visit 2 (randomization)
10. Those who had an implantation procedure with a permanent substance (silicone, PAAG, PMMA, CaHA etc.) in the treatment area (nasolabial fold )
11. Those currently with a streptococcal disease
12. Those with a history of severe allergy or hypersensitivity (anaphylaxis) judged as potentially affecting the clinical study
13. Those with a history of hypertrophic scar or keloid
14. Those with a history of bleeding disorder
15. Those with a hypersensitivity to the investigational medical device of this clinical study or lidocaine
16. Those who refused to agree not to use a local or systemic pain-relieving agent or other pain-relieving method (e.g.: ice pack) from the midnight of the treatment day with the investigational medical device through the post-measurement of the last VAS pain scale
17. Those who had participated in another clinical study within 1 month prior to Visit 1 (screening)
18. Those judged by the investigator as ineligible for this clinical study * Excluded were the patients with treated basal cell or squamous cell skin cancer or treated cervical cancer, of which the location is not the lower 2/3 part of the face.

The Safety set consisted of the subjects who were treated with the investigational device at least once after Visit 2 (Randomization) and had a safety follow-up at least once

The safety results were analyzed in the Safety set, and the safety was evaluated for the endpoints of local reactions, adverse events, vital signs and laboratory tests.