Side effects of collagen injections

Side effects of collagen injections mainly include: 1. Temporary swelling and redness: This is the most common reaction after injection, usually disappearing within 24–48 hours. 2. Skin irregularities: Improper injection technique or excessive dosage may lead to uneven skin surface at the injection site. 3. Bleeding: If the procedure is performed improperly, blood vessels may be punctured, causing local bleeding. 4. Allergic reactions: Some individuals may develop allergic reactions to collagen, with symptoms including edema, tenderness, itching, and erythema. 5. Accelerated aging: After the effects of the injection wear off, a rebound effect resembling accelerated aging may occur. Before receiving collagen injections, it is essential to fully understand these potential side effects and choose a reputable medical facility and an experienced physician to minimize unnecessary risks.