Bought Nutra Nail Strengthener a while back and used it every time I polished my nails. It made my nails much stronger. Unfortunately it made them so strong that there was almost no flexability left in my nails and they started just to snap off. Definitely works as advertised just use sparingly.
Great top coat, it really does dry pretty quick. There are a few other brands out there that dry faster but Out The Door is really good. The formula is on the thinner side but get thicker after you hit the halfway point, not sure why. Doesn't smudge my designs even then they are still wet. Reasonable price too.
Sally Hansen Salon Effects strips are quick and easy to use. There is a small learning curve but after you get the hang of it they apply super quick. Great to use if you want a cool manicure but don't have a lot of time. They come in a great variety of colors, finished, and designs. A little pricey at around $9.99 though. Great product.
I've used a few Sally Hansen Nail Art Pens and they are extremely easy to use. They aren't pigmented as well as I like but you can get decent coverage if you go over your lines a few times. Make sure you seal it in with a top coat though or it will wipe right off.
I've bought a few of these for my pups and they work pretty well. My only issue with them is that they don't clean up very easily. I usually put peanut butter in them and, while it provides great entertainment for my pups it's next to impossible to get completely clean. Great for their teeth though!
I own several Zoyas and they are one of my favorite brands. I am a nail polish blogger and I always find myself reaching for a Zoya polish when I don't know what to do. The formula is always great and they come out with many different and unique collections.