Eyelash serum that strengthens and darkens lashes from within: The black keratin※1 formula penetrates deep into the lashes to enhance strength and color. ※1 Hydrolyzed Keratin (derived from black wool) Double treatment from both inside and outside the hair: This serum provides a dual treatment with black keratin※1 and white keratin※2 to nourish lashes from both inside and outside. Achieve stronger, healthier lashes from the core. ※1 Hydrolyzed Keratin (derived from black wool) ※2 Hydrolyzed Keratin (derived from wool) Long-lasting curl retention: Helps maintain lash curl over time. With daily use, your lashes will stay youthful and beautiful. A delightful scent you’ll want to use every day: Marine Floral fragrance. Specially developed for salon use: This eyelash serum is designed for clients who use eyelash extensions or lash lift treatments.