Bruising is the most common side effect for this treatment; this may be seen in about 1 in 10 cases. Unwanted relaxing of neighbouring muscles is a rare, serious, but temporary risk with muscle treatment; it will go back to normal after several weeks. As everyone’s anatomy is different there is always a small risk of asymmetry. Many people will notice a pre-existing asymmetry due to increased attention & focus on the area. These can be easily corrected on review with our doctor. Infection is possible but exceptionally rare – we have a never had any cases of this.