The BNIB Nioxin Anti Hair-Loss Thickening Leave-In Hair Treatment Serum is a 70ml unisex hair loss prevention product formulated with active ingredients like sandalore and caffeine. The serum is designed for thin hair and black hair colour, providing a standard size bottle that can last up to 12 months after opening. It aims to nourish and thicken hair strands, promoting healthy growth and reducing hair loss. Ideal for daily use, this Nioxin product is a valuable addition to any hair care routine.