When botulinum toxin is injected into the muscle, it blocks the effects of a chemical messenger called acetylcholine that is released from the nerves to make the muscle contract. Then, it helps the muscle to relax. Cosmetic use of Botox increases over the years. Despite of the muscle correction associated with facial expression on the face, the injection into the upper side of the trapezius is becoming a common procedure for making a smooth shoulder line. As a result, the treatment can improve the appearance of the neck and shoulder and back.




The trapezius is a large piece of muscle that covers the neck, shoulder, and back. We can use Botox injections to shrink this muscle which will create a longer neck and straighter angled shoulders. Besides, it helps to release the neck and shoulder pain from overused and overdeveloped muscles.

Trapezius Botox | Shoulder Slimming | Scinn

Trapezius slimming is suitable for people who suffer from neck and shoulder pain, functional relief of the pain, some types of tension headaches, and poor posture problems. From an aesthetic perspective, this treatment can elongate the neck and create and straight 90 degreed shoulder contours to create an elegant long neck and look more feminine and with a less hulk-like appearance.

If you can pinch two chunks of developed muscle where the neck and shoulders meet, it means you have a strong trapezius. However, the trapezius injections are only suitable for girls who have overdeveloped trapezius muscles. If your problems are caused by fat accumulation, you are not a good candidate for this project. Instead, you can refer to our treatment of Lipodissolve injection.


Trapezius muscle hypertrophy is characterized by enlarged muscle bulk of the trapezius muscle. Because the shoulder injection is injected directly into the trapezius muscle of the shoulders to relax and shrink the shoulder muscles, it gives you a more elegant upper body. Normally, this procedure can often be performed in under an hour and you will not feel painful or uncomfortable.

After the injection, temporary soreness, redness and bruising is normal. Botulinum toxin typically takes 1 month to start working, then you can achieve the goal of slim shoulder and neck line, together with well-defined collarbones.

The landmarks for shoulder injection are important. Our doctors will mark out several strategic points on your trapezius and inject the required units of Botox into these points and you can return to your daily activities immediately. This treatment relies heavily on practitioners’ professional technique. Undoubtedly, our highly experienced cosmetic doctors and injectable nurses can help you to achieve the best outcome.


After the injection of the trapezius muscle, the shoulder line becomes smoother. Moreover, you can significantly find the reduction of the trapezius size. This treatment aims to recontour your neck and shoulder lines. Once the trapezius muscles are relaxed, a slim shoulder and neckline with well-defined collarbones can be visually seen.

Botox for the Trapezius Muscle – Pain Relief and Neck Line Sculpting In the  Same Treatment • Dr Gerard Ee

Basically, you can immediately return to normal activities with minimum side effects. The injections show immediate results within 1 week and can last up to 6 to 8 months. However, the botulinum toxin injection provides only temporary results. To maintain results, we suggest you have repeat treatments as and when they are required.

On the other hand, botulinum toxin For people with pain and muscle spasms in their shoulder, botulinum toxin can work by blocking muscular nerve signals to the brain and decreasing pain in the shoulder and neck. Therefore, there is a significant reduction in their pain in general activity. As a result, patients can benefit from an overall improvement in quality of life.


 Preoperative Preparations

Avoid having injections on an empty stomach.

Avoid drinking alcohol a week before the injection.

Avoid taking aspirin and other drugs within two weeks before the injection.

Avoid having injections during the menstrual period.

 Aftercare Instructions

Avoid touching, rubbing, or physical pressure on the affected area.

Temporary soreness, redness, and bruising are normal.

Leave the treated area alone without water for 1-2 hours.

Avoid hot or cold compress to the injection site within 24 hours.

Do not eat spicy seafood food within one week after the injection to prevent inflammation or bleeding reaction.

Avoid taking any antibiotic within one week, especially gentamicin and penicillin.

Do not drink alcohol within 3 days after the injection.

Do not go to the sauna, spa or swim for one week.

Avoid strenuous exercise temporarily.


Is this treatment safe?

Botulinum toxin therapy is one of the most popular cosmetic treatments available. Various of clinical researchers have proven that botulinum toxin A has been a useful ingredient in the treatment of benign masseteric hypertrophy with correction of the squared facial appearance and the reduction of enlarged calf muscles.

What can I expect from my treatment?

The injections show immediate results within 2 weeks. Then, you can see the final results of slimmer and reduction within 2 months. However, the botulinum toxin injection provides only temporary result, so we recommend to have repeated treatment once every 6 months.

How long can you see the result?

At the beginning, it takes 3 weeks to start working and you can find the results can be evident seen in approximately 4 to 6 weeks. In average, the difference will last typically between 4 to 6 months. However, we still recommend a second session at 3 to 6 months following the first injection in order to effect reduction in bone and muscle bulk to attempt at greater longevity.

How long does it last?

This may vary from patient to patient. In general, you can expect your result to last at least 3 to 6 months. It also depends on the individuals’ lifestyle and metabolism. As long as you do not adjust your posture or use trapezius very often, the muscles will still grow back. However, the longevity of the treatment can be increased with regular treatments. After 3 injection cycles, it could be  permanent .

What are the side effects after the injections?

Just like all injections, sometimes bruising and pain. Temporary weakness of the muscles may cause weakness of lifting or upper arm function. But usually  the side effects are very minimal to nil. By giving the precise dosages and operating by professional practitioners most patients do not experience any weakness or side effects.

– Botulinum Toxin Brands Available at PRIME –


Dysport is a botulinum toxin brand from the UK. It is exceptionally effective in targeting larger muscles, such as the shoulders and lower legs.

Xeomin is a botulinum toxin brand from Germany. It has zero risk of developing neutralising antibodies which may resist and reduce its effectiveness even if injected regularly.

Botox is a botulinum toxin brand from the United States. It is world-renowned for its accuracy, stability and effectiveness.

(*All data above are for reference only. Results may vary and it is best to consult a medical practitioner before pursuing any treatment.)


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