This award-winning and category-leading serum features proprietary, scientifically advanced technology to strengthen lashes and protect against breakage while improving flexibility and shine, resulting in dramatic looking eyelashes. WHAT ELSE YOU NEED TO KNOW: Safe for use with eyelash extensions Physician Developed Ophthalmologist Reviewed Dermatologist reviewed Clinically tested Hypoallergenic and Non-irritating Oil Free Vegan friendly and Cruelty-free Does not contain Parabens, Phthalates, Fragrance, Gluten Made in the U.S.A. The proprietary technology found in our category-leading eyelash conditioner, RevitaLash® Advanced, has been patented in the United states for its Curl Effect®. Discover the beauty of your natural lashes. RESEARCH RESULTS: Survey results from an independent 6-week consumer study including 63 participants: 98% Reported Improved Lash Appearance 98% Reported Healthier-Looking Lashes 98% Reported Stronger Lashes