I am approximately 3-4 weeks into trying this product out and I'm loving it so far. I do feel like my lashes are longer, they aren't much thicker per-se but still longer. I also haven't experienced any loss of eyelash hair with this either. Just be careful, if you get this into your eye it will sting! Just be careful and don't try to apply like you would with a tight-lining. I'll come back to do a follow-up review after I've used it for about 3-months. I would imagine for sanitation purposes, that I'll just throw it out and buy another if it's not used up in 3-months!