Review: China Glaze Nail Strengthener & Growth Formula

My nails have always been in great condition- they never break or split, and aren't weak. However my index and thumb nails have been splitting a lot lately which is annoying the hell out of me! I think it might be because of me bumping my nails onto things and maybe from removing pesky staples from prescriptions at work....
Well anyways I went to Cosmetic Fragrance Direct at DFO the other day and found this little beauty! It was $10, and normally retails for $18.95 so I guess I did save a bit! It was an impulse buy, although I have heard great things about China Glaze nail polishes so I didn't think this strengthener would be any different :)

And as I always do, just a little description from its website:

Nail Strengthener & Growth Formula is vitamin and protein enriched to promote healthy nail growth

-Promotes the growth of healthy, beautiful nails in 8 weeks  

-Vitamin B and wheat protein strengthens and protects nails

-Protects against splitting and cracking

-Great after removal of acrylic nails

          -DBP & Toluene Free (contains Formaldehyde as a nail strengthener & hardener) 

 Lol the "formaldehyde" scares me... having dealt with it in labs at uni and having warnings about it being toxic if inhaled or consumed (not that I will be eating it anytime soon) but if you use it in a ventilated room I guess we will be fine! I've always wondered how nail strengtheners work and if they actually work. So I was eager to try this and see if my nails improved over time.

I have been applying this to my nails for a few days now and I am loving the sheen it is giving to my nails! It has improved the look of one of my split nails, and I can definitely feel an improvement in the hardness too especially in my "healthy" nails. Quite surprising results for something I didn't really believe in initially.

Do you use a nail strengthener? What brand is it and are you happy with its results?