What to expect from a visit to an RN injector clinic in Vaughan for preventative Botox? ?

GM! I’m hoping to get some quick advice. I’m hitting my late twenties and starting to notice some fine lines around my forehead and eyes, so I’m looking to invest in some preventative Botox. I definitely want a medical professional handling my face. I came across this highly-rated RN injector clinic in Vaughan here https://aestheticnursemarta.ca/ and I love that they focus on facial harmony and patient safety rather than frozen looks. My only question is for the locals who get regular neuromodulators: how long do the results typically last for you, and did you experience any heavy feeling in your brows after your first time?