Mild diarrhea, upset stomach, nausea, a feeling of pain and a warm sensation at the site of the injection, a feeling, or a sense, of being swollen over the entire body, flushing, headache, skin rashes, and joint pain
Best For: Stubborn pigmentation, melasma, and overall skin brightening
Then, well walk through what happens on the day of your appointment so there are no surprises
How do Botulism toxin injections work
2 Literature search strategy To enhance transparency, the literature discussed in this review was identified through searches of PubMed, Web of Science, and Scopus up to January 2026
Some people develop flu-like symptoms, but this is rare