The quick answer to your question is yes, you can do both on the same day, but I would not recommend that if you want the optimal result. I don't blame you, instant results is always great, but patience in this case is best. If you were to undergo both on the same day, I would get the Hydrafacial first followed by microneedling. Remember, that is not your best option. The best option is to undergo microneedling initially followed by a Hydrafacial a week to ten days later. The microneedling works at a deeper level than the Hydrafacial and rejuvenating the deeper skin structures first, followed by exfoliation later, will get you better results. Find a clinic that has a good track record in skin rejuvenation evidenced by good results. Most clinics overseen or owned by board certified plastic surgeons or dermatologists are a good place to look. Dr. Knott