A few months ago, my fingernails started to peel and became brittle. I purchased Nail Tek’s strengthening polish about 6-8 weeks ago and have used it regularly since. Scent: very strong, chemical smell that often makes me cough. I find it very overwhelming in a bad way. Effectiveness: i would say 30% of my peeling nails have improved so far. It does limit how often peeling happens, but definitely hasn’t fully prevented it. How I use it: I apply Nail Tek as a base coat under polish but have also worn it on its own, while reapplying every day until I take it all off and start anew. I think there is more potential but I’m definitely a little disappointed!