Long, glossy lashes and brows remain a beauty staple, but the method to achieve them has evolved beyond multiple coats of mascara. Modern eyelash growth serums now focus on strengthening at the root using peptides, proteins, and conditioning ingredients such as vitamin E, hyaluronic acid, and castor oil to support healthier growth over time.
A beauty writer tested several popular formulas over many months, tracking changes in length, thickness, and condition. Each serum was applied to clean lashes as instructed by the brand. Among the top performers was RevitaLash Advanced Eyelash Conditioner, created by an ophthalmologist to help his wife after cancer. It works by slowing the growth cycle, and after six weeks, lashes appeared noticeably more conditioned, thicker, and longer.
Budget-friendly options also impressed, including a formula containing castor oil, vitamin B5, and hyaluronic acid, which improved lash condition in three weeks. Another multitasking serum with rhamnose and ceramides brightened the eye area while conditioning lashes. However, one serum containing hyaluronic acid, peptides, and biotin caused mild redness in the tester, which resolved after skipping a night—though it did improve length and condition over eight weeks.
Overall, peptide-based serums and those with hydrating ingredients delivered the best results. The writer recommends choosing serums that match your lash goals, whether seeking length, volume, or overall health, and advises patience as results are gradual.
