10 Best Lash Enhancers & Primers 2025

We know that your eyes are the windows to your soul, which is why having luscious lashes and full eyebrows can make all the difference. That's where our top ten picks for Lash Enhancers & Primers come in! We reviewed and scored many products in this category and found options ranging from a 7.4 score up to a staggering 9.2 score – but there's one brand that stood out above the rest. Viva Naturals' Organic Castor Oil for Eyelashes and Eyebrows is the clear winner, with its USDA Organic certification, pure hexane-free formula, and 16 fl oz size. This oil not only promotes hair growth, but also acts as a natural skin and eyelash serum. Don't just take our word for it – try it out for yourself and see the results firsthand. Trust us, your eyes will thank you.