Designed to enhance the appearance of lashes and brows, this exclusive formula is ideal for both men and women with brittle, weak, thin, or short hair. RapidBrow Eyebrow Enhancing Serum works to improve the fullness and density of brows in as little as 60 days. Infused with polypeptides, it provides beneficial amino acids to support youthful-looking brows, while biotin helps maintain healthier, more vibrant brows for a naturally flawless look.