REVITALASH's Revitabrow serum is ideal for those after thicker, more natural-looking brows. Made with the brand's exclusive BioPeptin Complex® that includes powerful ingredients like Peptides, Lipids and Biotin, this oil-free formula has Calendula and Amino Acids to help fortify, smooth and condition hair while protecting against environmental stressors and damage. 3ml up to 4 months supply.