I have tried many a top coat to extend the life of my manicure and this is the best I've found, better than Sally Hanson and Essie's top coats imho. However it is very difficult to find these days as PharmaPlus has stopped carrying it. Lately I've had to get it online at nailpolishcanadadotcom which isn't too bad if you can catch one of their 'free shipping' promotions. When applying this be sure to brush some over the edges of your nail tips (under too if your nails are long). I have found that chipping is delayed by 5-6 days compared to other top coats. Note: it does 'smear' any nail 'art' so is not recommended if you have 'drawings' etc on your manicure. This is not the cheapest top coat out there but I find the few extra dollars worth it.