There is no physiologic reason for Botox to be effective for directly softening acne scars. As you probably already know, Botox works by weakening muscles of facial expression. The reason your forehead became smoother is that there is a muscle in the forehead that was weakened, causing an overall smoother contour to your forehead skin (as it usually does).
The effect was not a result of injection into the acne scars. The effect that Dr Jafri describes in the cheeks is more likely an effect of inserting a needle into the skin. This traumatizes the skin causing edema or swelling, thus temporarily flattening the acne scars.
The Botox is probably an innocent bystander. Seek out a physician in your area that does a procedure called "needling". It may give you the effect that you are seeking without any risk of paralyzing your smile muscles. Good luck!



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