Rimmel's Lash Accelerator Serum - it was effective for me.
Physician's Formula's Lash Booster 2-in-1 Eyeliner+Serum doesn't offer much in the way of lash growth, but its still one hell of a liquid eyeliner. The brush tip is just superb, as is the formula. I can always depend on this eyeliner to last all day, no matter what. I'm not satisfied with the shade Ultra Black though, it needs to be way darker. For that reason, I'll repurchase the Jesse's Girl Waterproof Liquid Eyeliner instead. The formula and packaging are both very similar, but its much blacker, and about four bucks cheaper. However, if you don't have access to Jesse's Girl products, Physician's Formula's Eye Booster is a great alternative that I wholeheartedly recommend!
Water, Ethylhexyl Acrylate/Methyl Methacrylate Copolymer, Butylene Glycol, Sd Alcohol 40, Beheneth-30, Ammonium Acrylates/Methyl Styrene/Styrene Copolymer, Glycerin, Myristoyl Pentapeptide-17, 1,2-Hexanediol, Acrylates/Octylacrylamide Copolymer, Caprylyl Glycol, Ethylhexylglycerin, Pentylene Glycol, Polyglyceryl-3 Disiloxane Dimethicone, Phenoxyethanol, Sodium Hydroxide, Disodium EDTA, Black 2.