I have never been a very firm believer in nail hardeners/strengtheners, and have always just defaulted to Rimmel Stronger Double Duty which works super well as a base coat. But i recently borrowed Nail Envy and was pleasantly surprised. It comes out clear, and looks almost gel like when left plain on nails. I didn't use it long enough to see if it really does strengthen nails, but when having my nails done recently I was told by the nail tech that she swears by this little goodie.

Get yours at your local Dischem for somewhere around the R200 mark (rather pricey in my opinion). 

Click here for OPI's Facebook group in South Africa