I've been using the generic "latisse" for about 8 weeks. I am 45 years old. I bought it from a pharmacy in Tijuana for about $30 for 3 ml or about $100 for 3 bottles I use an artist brush as an applicator and can easily do both eyes with one drop.
For the first 4 days, my lids itched. I notice my lashes seem longer (about 6 really long ones), but they don't seem to be thicker or darker.
So far I am happy. Can't wait to see what happens at 16 weeks. I like the fact that after that time, I may be able to do a maintence schedule. That seems to make it worth the money.