Sally Hansen - Miracle Cure - Strengthener

This base coat/ polish is meant to strengthen problem nails.

It dries super fast and is really shiny (love).

However, it chips so fast! like within the first day!
:( Why Sally, why?!

After a few weeks of using it, my nails do seem a little stronger, but not a phenomenal amount.

Price: 1/5 ($19.95 for 13.3mL)
Effectiveness: 1/5

Sally Hansen - Advanced Hard as Nails - Strengthener - Nude

This contains Nylon, retinol, soy and omega 3 to re-enforce your nails. 
So if your nails are soft or brittle, this may be a good polish to try.

Price: 3/5 ($9.95 for 13.3mL)
Effectiveness: 4/5