45 yr old mom of 3: would Renuva + Sculptra round butt out and fix hip dips/cellulite?

Absolutely any filler can do the job in terms of filling out the buttock as well as the hip dips. The issue on hand is what is worth the money and is safe. Definitely not Renuva or any other filler such as hyaluronic acid fillers or Radiesse, which would last only a short amount of time, meaning less than a year. Sculptra would be my best choice for a BBL or hip dip correction unless of course the patient has their own fat which can be used for fat grafting With permanent results. I hope this helps and good luck from New York City plastic surgery