Can you be allergic to chemicals in botox?

Allergic reactions to Botox are extremely rare, but would involve swelling, itching, rashes, trouble breathing due to swelling of the airway. I recommend sharing your concerns with your Dr. before injections to go over all relevant information. Best, Dr. Emer

Thank you for
your question. Botox is
a purified protein used to address wrinkles associated with facial expression. Allergies to Botox are rare. It is normally not to the Botox itself, usually a preservative. I have performed thousands of treatments and have not seen an allergy to Botox. Please consult with
a doctor for specific recommendations. Good luck!

Anything is possible, though this would be incredibly rare and I haven't seen it in thousands of patients injected over a decade.