I've been using Retin A since my twenties and I'm now 42. Since tretinoin increases collagen, I'm wondering if Ulthera would render any improvement for someone like me? I'm starting to lose volume in my face which I actually don't mind because I finally have cheek bones! But I don't like the sagging around my jaw and mouth. Would Ulthera give me any improvement or would it be redundant since I already am using a product which stimulates collage?
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