Among all the procedures you have received so far, are there any that felt like a complete waste of money and any that were worth the price?

I've been doing some research lately because I want to try out various treatments, and it seems like the procedures that work best for everyone are different!

Could you possibly share just one "god-tier" procedure you received that was truly worth the money, and one that felt like a total waste? I'd love to use this as a reference before my next appointment.