Yes, there is! Take a look at Isdin Si-Nails. This fast-absorbing serum nail strengthener has been clinically proven to boost the thickness, density, and durability of the nail and cuticle.  In fact, 93% of consumers who used the product for 28 days reported less brittle nails. It shouldnt come as a surprise, though. One of its main ingredients pistacia lentiscus gum promotes keratin, a key component for strong and healthy nails.