I’ve never used collection cosmetics before but I purchased some gel nail polish from them for £3 from boots and I can honestly say they are some of the best nail polishes I’ve ever used.
I tend to find that gel nail polishes are longer lasting and they give an excellent salon finish. I’ve used the Guerlain gel nail polishes as well and they’re pretty long lasting too but they’re slightly more expensive at £18.
The only problem I do have with the collection nail polishes is that the colour range is so limited and tend to be on the darker side and so it’s hard to find summer colours such as pastels like Barry M do.
Have you tried any collection cosmetics?