Thinning hair occurs when hair follicles shrink, producing finer, weaker strands. Unlike sudden hair loss, thinning happens gradually, often leading to reduced hair volume, widening part lines, and increased scalp visibility. While factors like aging, genetics, and stress play a role, early intervention can help strengthen follicles and promote regrowth. Nonsurgical treatments such as PRP (platelet-rich plasma), exosome therapy, and Keravive scalp treatments provide an effective way to nourish follicles and improve scalp health.