T.F.
I am blessed with pretty decent lashes but I LOVE the Dior Maximizer conditioner/primer. I know it is pricey (about $28/tube).
I use the new Clinique mascara and it is the best I've used since the Dior mascara.
I'va had people ask me if I have lash extentions which I don't. I love these 2 products and it is worth it to me.
For a cheaper alternative... my 17 yr old's lashes look fake and are perfect and she uses the yellow 9x tube of mascara from Target. I forget who makes it, I just remember it is yellow and less than $10.