growth factors can also be found in less expensive but effective products like skinactives EGF for brows serum (ignore the name - it can be used on the lashes). it's $10.50, comes in a sponge-tipped lip gloss container, and can be applied to the lash roots.
I was looking all over trying to find info on this product. Here is an interesting thread about it: NEW Photos! My progress with Jan Marini Eyelash
And her is the photos that were posted in that thread, looks good!:
After about 4 months of using JM
It made mine longer but not fuller. Rather have full, short lashes than long sparse ones. I used Talika before this and it made my lashes fuller not longer. Wonder if I should be doing both at same time? Talika was good for eyebrows, areas that were sparse grew back in quickly.