How soon after Ulthera may I get Fractora done?

I had two Ulthera treatments two years ago and then last winter a series of 3 fractora treatments. I garnered really good results from both. In July, I did another Ulthera and will do a second treatment this Friday, November 11th. I would also like to do 2-3 more Fractora treatments this winter season. How soon after my Ulthera on November 11th could I do the fractora? Thank you.

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