Hello, according to what you said, we must first determine whether this ineffectiveness is psychological, because the elasticity of masseter muscle may not be so great after repeated paralysis, so your facial contour is likely to be more effective now than it was seven years ago, but the short-term effect is not obvious. I suggest you compare the photos.

In another case, you may have developed resistance to botulinum toxin. Many stars will choose botulinum toxin that will not produce antibodies because they need long-term injection of face-lifting needles and to prevent drug resistance, such as XEOMIN in Germany, but the injection may not be effective when antibodies have been produced.

Now, my advice to you is to judge whether your masseter muscle has changed during occlusion. If it is obviously not, it proves that the muscle does not need to be injected with a face-lifting needle. The second point is to try to choose XEOMIN or botulinum toxin type B (you should have injected type A before) for injection, which has a certain probability of effectiveness, but you should also consider the possible ineffectiveness.

If my answer is not clear, I can ask more questions.