The L'Oreal Paris Makeup Lash Serum Solution is a popular choice among Amazon users for lash enhancement. This serum is enriched with lash-caring ingredients such as glycerin and pro vitamin B5, which help to nourish and strengthen the lashes. It is designed to be applied daily to clean lashes, and many users have reported seeing visible results within a few weeks of use. The serum is also ophthalmologist-tested and suitable for sensitive eyes. If you're looking for an affordable and effective lash enhancer, the L'Oreal Paris Makeup Lash Serum Solution is definitely worth considering.