What it is:  A lightweight serum designed to enhance the appearance of thickness and fullness for healthier-looking lashes and brows in as little as four weeks. Formulation: Lightweight Serum Highlighted Ingredients:- Acetyl Tetrapeptide-3 in combination with Trifolium Pratense Flower Extract: Supports hair density and thickness.- Biotinoyl Tripeptide-1 and Panthenol: Supports hair density and thickness.- Combination of Camellia Sinensis Leaf Extract, Larix Europaea Wood Extract, and Zinc Chloride: Supports hair density and thickness. Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. These products are also vegan, gluten-free, cruelty-free, and come in recyclable packaging. What Else You Need to Know: This advanced multi peptide serum features 11 active ingredients, including four peptide complexes and natural extracts that work together to nourish, protect, and visibly improve lash and brow density. With consistent use (2x daily), it delivers noticeable improvements in as little as four weeks. Clinical Results: Visibly fuller lashes & brows in 4 weeks* *clinical testing on 35 people