SEVICH Hair Fibers for Thinning Hair - Instant Thickening, Natural Keratin, 25g Medium BrownInstant Thickening That Looks Natural SEVICH Hair Fibers are built from 100% natural keratin fibers that cling to your existing strands, creating a fuller, more confident silhouette in seconds. The blend is lightweight and breathable, so your hair still looks like itself, only thicker and more voluminous. Key Benefits at a Glance Natural looking fullness that blends with your own hair for a seamless effect. Lightweight, non heavy texture that wont