At first I used Seche vive in a blue or rather cobalt packaging, I was satisfied so I decided to try this hardener too. For some time, unfortunately, I have allergies (burns?) from hybrids, so I'm looking for alternative ways for nice and fairly long claws, something that will give an effect similar to hybrids and something so that I don't have to dry hours of ordinary nail polish and not be afraid of prints e.g. from bedding; ) This product makes life a lot easier. Accelerates the drying of varnish, in my case the nails are dry after about 15 minutes. It gives a nice effect, it is not of course identical to a hybrid but nicely 'smoothes' ordinary varnish. Smell not great but it's not a perfume so I don't criticize it for that. Extends nail polish durability. The product is comfortable to use. I noticed that with time the texture goes a bit funny. Generally a nice and helpful product.