DD and I have used Rapidlash (both still using original tube) for at least a couple of years. Once the length and thickness we wanted was achieved, usage was decreased from daily to about once a week (if we remember!).

I use latisse. I get a prescription from my dermatologist. It works but it is dreadfully expensive. Maybe about $150 for 2 or 3 months supply.

The other downside is you have to use it every single night and cannot skip it when you just want to fall into bed. At least I follow the directions to do this as I am scared to waste this much money and not follow directions.

You can also use it on sparse eyebrows so after I apply to my lashes I take the still wet brush and mush it on my brows. Takes 5 or 6 weeks to see results.

I wonder if there is a cheaper, faster way albeit safe for the eyes. I recently had a spontaneous, yes, non traumatic corneal gouge(abrasion), right in the central part of the cornea.

You can also have them tinted, which gives the impression they are fuller. I do that sometimes for vacation where you won't want to bother with make up, swimming or at the beach.
They say it is vegetable dye but It's probably not great for you ...

I have my lashes and brows tinted and it I love it. It does make them look fuller. I do it every 4 weeks.

Good to know about Rapidlash. I may try it just to see if it would make a difference.