This product pick is actually two products – because they go together. I chose the MAXUS strengthening base & top coats. They are kind of a cult fave and I find myself gifting these to my friends a lot. They are non-toxic and have unique ingredients that make them effective at strengthening nails and keeping them healthy. The base coat has tea tree oil and amino acids and the top coat has ceramic and nylon for added strength. Check out the MAXUS strengthening nail color, too in four classic colors.