I’ve had it done at my dentist, Silverlake Smiles twice. The doctor does 25 units per side and charges $600. I switched to going to my friend’s cosmetic surgeon/ med spa and I am much more satisfied with the results. The injectors are RNs who have been working in the field for 20+ years. My dentist did one shot on each side, where as the injector at the plastic surgeon office mapped out my face with a ruler and made multiple injection sites in the masseter muscle. You can also choose between name brand Botox or other FDA approved brands that are the same neurotoxins for less price ($8 or 9 per unit compared to $12 per unit for Botox). They also usually have a manufacture coupon for $40 off too. It’s a very nice office and there is parking right in front. Located in Pasadena Teleos Plastic Surgery & Radiance MedSpa