Fibroblast bioelectric signaling drives hair growth
https://www.sciencedirect.com/science/article/abs/pii/S0092867425008578
A 2025 Cell paper found that fibroblast bioelectric signaling drives hair growth. Specifically, KCNJ2-driven hyperpolarization in dermal fibroblasts promoted hair growth, while depolarization delayed the growth phase. They even reported rescue effects in aging and androgenetic alopecia models. Tiny voltage gremlins in the scalp, apparently.