I just had Botox injected in my forehead 3 days ago. Are the indentations in my forehead permanent?

Botox will not cause you have to have 'dents' or other permanent irregularities in your forehead. Unless something else (skin condition) is going on- it's not caused by the botox as long as the Botox was constituted in the right solution etc. 
Hope this helps and God Bless!
Dr. Robb

Thank you for your question. BOTOX® should not create permanent indentations in the skin. It’s possible that the indentation is resulted from swelling in the surrounding area and will fade within the following few days or week. Any effects from the BOTOX® will also eventually wear off after about 4 months, so if you’re unhappy with your results, rest easy knowing that they aren’t permanent. Good luck!