If Botox is mistakenly injected into the DAO muscle, will it always result in drooping, or is it possible to have no effect at all?
Thank you for your question, pompbeauty. Botox is a purified protein commonly used to treat wrinkles associated with facial expressions. It is primarily used to address wrinkles in the upper face, such as the forehead lines, frown lines, and crow's feet. However, Botox has expanded to other areas of the face and neck. It can be used in the bunny lines on the nose, around the lips, beneath the nose, above the lips beside the nose, in the lower face, on the chin, and on the neck. As with any injection, there are risks of pain, bleeding, bruising, redness, swelling, tenderness, infection, and spread of the product to nearby muscles. To minimize side effects, it is important to use a low dose and place the product accurately. I suggest consulting with your doctor for specific recommendations.
Careful and professional Botox injections rarely result in adverse effects. However, if Botox is injected into unintended muscles, it may temporarily affect your smile. The muscle under the lower lip, known as the DAO, can cause an asymmetric smile if weakened. Injecting Botox in this area is considered "off-label," meaning it has not been specifically approved by the FDA.
Misplaced Botox injections can result in an asymmetric smile, which typically returns to normal after the effects of Botox wear off. The smile should even out within 3-4 months.
Botox placed inaccurately in the Depressor Anguli Oris (DAO) muscle can result in lip asymmetry, especially when smiling. Any asymmetry should resolve within a couple of months and return to normal.
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