The RevitaLash Advanced Eyelash Conditioner is a highly rated lash enhancer on Amazon. This conditioner is formulated with a blend of peptides, botanical extracts, and vitamins that help to nourish and strengthen the lashes. It is easy to apply and can be used on both upper and lower lashes. With regular use, many users have reported significant improvement in the length, thickness, and overall appearance of their lashes. The conditioner is also safe for contact lens wearers and is cruelty-free. If you're looking for a high-quality lash enhancer, the RevitaLash Advanced Eyelash Conditioner is definitely worth considering.