Matrix's Biolage Full Rescue Invigorating Scalp Serum is a lightweight treatment designed to strengthen thinning hair from root to tip. Enriched with rosemary oil and niacinamide, it supports a healthier scalp, enhances the appearance of hair thickness, and helps reduce breakage-related hair fall. Perfect for those looking to achieve stronger, fuller-looking hair, this serum reinforces strands while creating an optimal environment for healthy growth. For best results, use as part of the Full Rescue system.