A cluster of specialized cells at the base of the hair follicle that act as the follicle’s "command center" — directing hair growth, cycling, and what the hair shaft looks like.Dermal papilla cells (DPCs) are mesenchymal in origin and produce the paracrine signals (KGF, IGF-1, Wnt ligands) that drive follicle keratinocyte proliferation and anagen entry. DPCs are the primary target of PTD-DBM — the CXXC5-Dvl interaction that PTD-DBM disrupts occurs specifically in dermal papilla cells. The DPC niche is also where androgenetic alopecia acts, via DHT-mediated miniaturization signals from DPCs to the follicle matrix.