How long does it take for facial slimming injections to take effect?

Feb 27, 2025 Source: Cainiu Health
Disease description:

I am not satisfied with my facial contour and hope to improve the facial profile through jawline slimming injections. I received the injection a week ago, but have not noticed any significant effect yet. Therefore, I would like to ask the doctor how long it typically takes to see results after receiving a slimming injection.

Doctor's answer (1)
Dr. Chen Lu

In general, the effect of a slimming injection begins to show within 3-7 days after injection, but it may take 10-14 days for the full effect to become apparent.

Slimming injections typically use botulinum toxin type A for injection. Their mechanism of action involves blocking signal transmission between nerves and muscles, thereby relaxing the muscles, reducing muscle activity, and achieving a slimming effect on the face. The effect of these injections is not immediate and requires a certain recovery period.

To see results as soon as possible and ensure safety and effectiveness, patients should choose licensed medical institutions and experienced, qualified physicians for the injection. They should also strictly follow post-procedure care instructions provided by their doctor. Avoiding massaging the injection site and consuming overly hard foods can help enhance the effectiveness. Although slimming injections offer a quick and effective way to improve facial contour, the results are not permanent. Usually, 4-6 months after the injection, muscle function gradually returns, and a second injection may be needed to maintain the desired effect.

The time it takes for the slimming injection to take effect varies from person to person and is influenced by multiple factors. Patients should remain patient and undergo the injection and follow-up care under the guidance of a qualified physician to achieve the expected results.