What are the side effects of瘦脸针?

Generally, the slimming face injection refers to Botulinum Toxin Type A for injection. This substance achieves a face slimming effect by blocking nerve signal transmission between nerves and muscles. The general reference price of Botulinum Toxin Type A for injection ranges from 1000 to 5000 yuan per session, and effects are usually noticeable 2 to 4 days after injection. Possible side effects of Botulinum Toxin Type A for injection may include stiff facial expressions, local swelling, weakened chewing ability, skin laxity, and difficulty swallowing, among others. A detailed analysis is as follows:

1. Stiff Facial Expressions

Botulinum Toxin Type A for injection works by blocking nerve impulses between nerves and muscles, relaxing overly contracted muscles to achieve a slimming effect. However, if the injected dose is too high or the injection site is inaccurate, it might affect the normal function of facial expression muscles, leading to unnatural or stiff facial expressions.

2. Local Swelling

The injection process may cause some trauma to the skin and muscle tissues, resulting in local swelling and bruising. This swelling is usually most noticeable within the first 1 to 2 days after injection, manifesting as redness, swelling, and purplish discoloration at the injection site, possibly accompanied by mild pain and tenderness. Symptoms generally subside gradually within about a week.

3. Weakened Chewing Ability

Botulinum Toxin Type A primarily acts on the masseter muscles, causing them to atrophy and shrink. However, if the drug spreads to other chewing muscles or causes excessive relaxation of the masseter muscles, it may weaken chewing strength. This can make eating, especially chewing hard foods such as nuts and beef jerky, feel strenuous. It may also cause symptoms such as soreness in the chewing muscles.

4. Skin Laxity

Excessive use of Botulinum Toxin Type A for injection or its use in unsuitable individuals may cause excessive atrophy of the masseter muscles, leaving them unable to provide sufficient support for facial skin. This can lead to sagging and drooping of the facial skin, particularly noticeable in the cheek area, making the facial contour less defined and increasing the appearance of facial aging.

5. Difficulty Swallowing

If Botulinum Toxin Type A for injection is administered too low or if the drug spreads to neck muscles, it may affect the normal function of throat muscles, causing coordination problems during swallowing and resulting in dysphagia. Symptoms may include a sensation of blockage when swallowing and slow passage of food. In severe cases, this may affect eating and nutrient intake.

If needed, it is recommended to visit a legitimate hospital and receive injections under the guidance of a qualified physician to ensure safety and effectiveness. In daily life, it is advisable to eat more fresh vegetables and fruits and avoid consuming indigestible foods, overly hard foods, nuts, and crispy snacks such as twisted dough sticks.