I got Botox for my crows feet for the first time and experienced dry eye. Will this always happen?

Dear JJO60385,
This is indeed rare. If the needle hit the bone near the cross foot injection, the liquid muscle relaxer may have diffused to the lacrimal gland or onto the eyelash glands reducing the oil film / tear drop and giving you a the dry eye sensation. Hopefully, you achieved a reduction in the crows feet and a brow elevation with that!

Continue to use artificial tears until the tear functions return.

Injection site placement, dilution, product, swelling and bruising all affect individual effects. Consult with a talented and skilled Board Certified Plastic, ENT or Ophthalmologic Surgeon for your best results.
All the best!

Getting dry eyes from Botox is a rare thing, but could happen. To avoid this problem from happening again, it is important that you seek the services of board certified medical providers, Botox specialists, people who are trained and skilled in injecting Botox for cosmetic reasons.