Pros: easy to apply, generous amount of colour and conditioner provided, great colour to use as a filler (blonde to brown), affordable
Cons: contains hydrogen peroxide so will cause a small amount of bleaching, is quite red if you're not used to this colour

I used this colour as a red filler when going from blonde to brown hair. It covered my hair evenly and was quite a nice natural orange if that's the colour you're after.