Botox completely worn off following Collagen PIN microneedling?

Without before and after photos, an accurate assessment cannot be given. It is highly unlikely that microneedling affected your Botox. 56 units should effectively treat the glabella, forehead, and crow's feet for 3-4 months, not just 3 weeks. A more likely scenario is expired or inactive botox. Share your concerns with your injector.

Thank you for your question hfultz. I
am sorry to hear about your situation. Botox is a purified protein used to
address wrinkles associated with facial expression. Microneedling should not affect Botox. It is important to compare before and after photographs to assess any changes. However if my patient were to feel that microneedling interferes with her Botox I would recommend waiting until the series of microneedling treatments is completed before proceeding with another Botox treatment. Please consult with a doctor for specific
recommendations.  Good luck!