I was skeptical about this product at first because I have used product after product to make my nails thicker. They never grew very long and were very brittle. After using the Nails Alive Thickener I can definitely tell a difference. They no longer have the little clear spots around the quic and they don't bend like they used to. This stuff really works and now I have long healthy nails that look good and I'm proud to show them off.