Iinitially I thought it was a good job I'd ordered the extra brushes, as no matter how careful you are to be quick applying the resin to the silk & putting the brush immediately back into the bottle & closing it, it is only possible to use the brush no more than a couple of times before it begins to harden. This results in thick, ridged & uneven application. It is only possible to then counter that by filing - which exposes the silk again, requiring another coat of resin, & leaving a white-ish appearance underneath. The brush will soften up again but only after being left in the resin bottle for considerable time, making it impossible to repair or properly wrap more than a couple of nails at a time with it. The spare brush set does not fit the 8g bottle, so you can dip them in but not close the bottle afterwards - meaning they immediately start to harden too, so unless you have four bottles of resin on the go all the time (which do fit the spare brushes) they don't help matters. The spray nozzle on the Acivator spray also sticks down in between sprays, which is a nuisance. The silk wrap on a dispenser, as opposed to pre shaped wraps, is more economical & means you can cut exactly the shape & size you require & can build up a C curve where necessary, although it is a little more fidly to cut & use, especially when manipulating it by tweezer to avoid touching it. The silk & resin, however, are strong & bond well. The Nail Prep & Wipe is fine. The Acetone is fine. The Soak Off Clips are fine except that the hinge on one of them is very loose & doesn't grip shut well. Overall, I'm not particularly impressed.