The duck lips from the filler injection haven't faded after three years.
In general, when hyaluronic acid is injected into the lips and has not disappeared after three years, possible reasons include the quality of the hyaluronic acid product, excessive injection dosage, improper post-procedure care, local capsule formation, or technical factors related to the physician. Common improvement methods include warm compresses, improved care routines, hyaluronidase injections, laser ablation, and radiofrequency ablation.
Analysis of why hyaluronic acid in lip injections hasn't disappeared after three years:
| Causes | Poor Hyaluronic Acid Quality | Excessive Injection Dose | Inadequate Aftercare | Local Capsule Formation | Physician Technique Factors |
| Root Cause Analysis | The injected hyaluronic acid may be of poor quality or contain impurities, leading to slow metabolism. | Excessive volume injected for "duck lips" can slow down the metabolic rate of hyaluronic acid. | Neglecting post-operative care, such as frequently touching the injection site, may impair metabolism. | Capsule formation around the injection site causes prolonged persistence of duck lips. | The physician’s skill level can affect how long the results last. |
| Solutions | 1. Hyaluronidase injection |
1. Warm compress 2. Hyaluronidase injection |
1. Improve aftercare routine 2. Local warm compress |
1. Hyaluronidase injection 2. Laser ablation |
1. Hyaluronidase injection 2. Radiofrequency ablation |
Procedure Analysis:
Procedure Name |
Hyaluronidase Injection | Laser Ablation |
Radiofrequency Ablation |
Reference Image |
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Principle |
Breaks down hyaluronic acid into smaller particles to promote its decomposition and metabolism. | Uses carbon dioxide laser to vaporize and destroy excess hyaluronic acid. |
Generates heat via high-frequency current to stimulate hyaluronic acid metabolism. |
Indications |
Impure hyaluronic acid product or excessive injection volume. |
Localized excess hyaluronic acid | Localized excess hyaluronic acid |
Reference Price |
1,000–3,000 RMB per session | 500–2,000 RMB per session |
5,000–10,000 RMB per session |
Advantages |
1. Simple procedure 2. High safety |
1. Minimal pain 2. Fast recovery (10–30 days) |
1. Minimal incision 2. Effective results |
Potential Risks |
1. Risk of bacterial infection 2. Damage to lip glands |
1. Pigmentation 2. Inflammatory recurrence |
1. Skin laxity 2. Swelling and pain |
If discomfort occurs, it is recommended to visit a正规 medical facility for evaluation and treatment based on diagnostic results. Maintain proper lip care regularly and avoid spicy foods such as chili peppers, Sichuan pepper, and ginger.


