Sorry to jump in, just wanted to add that I, too, use Renovate and it has transformed my nails. I put a tiny dot in the middle of each nail and rub it in, paying particular attention to the cuticle / sides. I do it at least once a day, sometimes twice. I used the buffer initially (the black side is to buff and the white side to polish), as it says it seals the treatment in and I was hoping to buff away my ridges, but it actually just made my nails thinner, and therefore weaker. If your nails are flaking, I'd definitely go easy with the buffer. It hasn't solved the ridges, unfortunately, but my nails are so much stronger and healthier, and grow really well. Would love to paint them more, as have so many lovely polishes and love how groomed people look with painted nails, but haven't really got the patience. I've tried the several thin coats method, but it drives me mad when I sit there for what feels like ages, only to ding a nail as soon as I use my hands again, rendering the whole laborious process a waste of time! :headbang: The tube is only 10ml and looks tiny, but lasts ages. Would definitely recommend. :happy: