i LOVE this mascara. my absolute fave. nothing get's your eyelashes as long as this - and without looking clumpy, as many other bigger mascaras do. i alternate between this and maxfactor false lash mascara, but i always go back to this :) it really is waterproof too - great if you're watching a sad film on a date haha:) i'd say its quite steep at around £10 in boots, but most mascara are this much, and if you wait for 2 for 3 offers or use boots advantage points its really fine:) i'd say this lasts max. 3 months before it goes clumpy, like any mascara, providing it's used on an everyday basis. this is great too for the bottom lashes - as i find with the thicker mascaras, with bigger brushes, when put on lower lashes, it looks ridiculous - but this looks good :) it's sooo popular with other teens (i'm 17) so it can't be bad..i've converted my 44 year old mum too :)