Shoppers Say Their Lashes Are “Fuller and Longer” After 3 Weeks of Using This Serum — and It's 30% Off

Smile or not, I believe I’m never fully dressed without at least two coats of mascara, and I know other people with short, thin lashes know the struggle all too well. To make matters worse, extensions, curlers, and yes, even my beloved tube of Lash Blast only further damage those ultra-delicate hairs. A better option? A super-effective serum. 

If you’ve ever looked into filling in your lashes and brows by using a growth-promoting product, you’ve likely run into horror stories about red, irritated eyes or, perhaps more unsettlingly, darkening irises. Luckily, there are some ultra-gentle formulas that get the job done without scary side effects—like the shopper-loved Bartslash Advanced Eyelash Growth Serum. Derived from amino acids alanine, arginine, and isoleucine, this serum strengthens existing lash hairs. Some of these protein building blocks add a protective layer to damaged cuticles, while others draw in moisture to keep strands hydrated. The serum also contains hydrolyzed silk for softness and shine.

Shop now: $20 (Originally $30); amazon.com

The serum has already racked up nearly 3,000 perfect ratings on Amazon, and multiple shoppers have declared it “magic” for delivering quick results. “My lashes are already looking fuller, longer, and they are falling out less and less,” wrote one shopper after just three weeks of daily use. “This stuff is the real deal and will be a permanent part of my day and night routine,” they added. Another fan noticed “super long and healthy-looking” lashes where there had previously been gaps, and remarked that the formula “great alternative to more expensive products for a fraction of a cost.” A third shopper raved that it didn’t irritate their eyelids like other growth products, and took their lashes from being “almost non-existent” to “a quarter inch long.” 

Thanks to Amazon’s pre-holiday sale, so many beauty must-haves are discounted, including this now-30 percent off growth serum. Shop the Bartslash Advanced Eyelash Growth Serum and more while sales continue.

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