DS Laboratories Spectral Brow Revitalizing Eyebrow Serum is designed to promote the appearance of fuller, denser eyebrows. This brow serum works by stimulating growth and providing greater density to the eyebrows, helping to structure your face and draw attention to your eyes. The formula is non-irritating and effective, made with gentle, high-quality ingredients. It utilizes DS Laboratories' cutting-edge Nanosome Technology for maximum efficacy, allowing ingredients to penetrate the skin to the desired depth for higher stability and concentration. The serum is suitable for everyday use and can help achieve gorgeous, thicker eyebrows with consistent use. It is a vegan and cruelty-free product. The size of the product is 4 ml.