I have EXTREMELY sensitive skin & wondered how I'd go with this product. The first time I used it on my face & the backs of my hands (no lips or eye area) my skin tingled slightly for about 30 seconds so I suspected I would break out in a rash or that my forehead would peel off. It also felt a bit "grainy", like a lightscrub, but I didn't rinse it off, I left it to see what would happen. Nothing negative happened. I used it again the next night, but I used less & the same thing, but the tingling was not so pronounced. After I'd used it every night for a week (with very vague tingling) on my hands & my face, my skin was noticeably softer, smoother & my "blotches" were less visible. This was particulary noticeable on my cheeks & the backs of my hands. I also love how it makes my skin feel. I now wear it every day as part of my morning routine (with sunblock of course!) instead of at night time. My nightly routine uses another great product from the Boost range. Anyway, the C25 is a great product in my opinion. Pricey, but what price a youthful look, without surgery?
Try anything once!