Since the cost per session isn't exactly cheap, how long did the effects last after receiving Celle Diem just once?

I'm currently compiling a list of treatments to solidify my skin's foundation in preparation for the fall and winter seasons. I need to get ready in advance, right? Haha.

My friend raved about how her skin tone became clearer and texture smoother after receiving Celle Diem, so I'm tempted. Since the cost for a single session isn't exactly cheap, I think the most important thing is how long the nourishing effect and radiance last after just one treatment.

Please share some tips on how many weeks after receiving Celle Diem the glow starts to look its prettiest, and how often I should get follow-up treatments for the best value. Thank you in advance for any advice. I really want to have beautiful skin.