Amplifying Brow Serum 1mL. Benefits: Helps brows appear fuller and darker in weeks. Nourishing ingredients like castor oil and biotin. Doe foot applicator for brow saturation. Cruelty-free and vegan. Key Ingredients: Castor Oil: Full of fatty acids that condition the skin and support fuller-looking brows.. Panthenol: Smooths and softens skin and hair while improving the texture of damaged hair.. Biotin: Moisturizes and strengthens the hair and adds a touch of shine.. Sodium Hyaluronate (Hyaluronic Acid): Restores dry, damaged skin and hair for enhanced appearance and strength.. Tocopheryl Acetate (Vitamin E): A skin-conditioning agent full of antioxidants.. Research Results: 85% saw fuller-looking brows within six weeks.. 81% said brows look more defined.. 91% saw improved overall brow appearance.. 86% saw healthier looking brows within six weeks.. 85% saw darker looking brows within 6 weeks..