Digital Screening Identifies a Novel Niacinamide and Ginger Combination Targeting the HIF-1α Pathway for Hair Regeneration: Mechanistic Evidence Presented at AAD 2026

HIF-1α (hypoxia-inducible factor-1α) is a key cellular oxygen sensor governing tissue regeneration, and has been specifically implicated in hair follicle stimulation. Under normoxic conditions, HIF-1α is continuously degraded by two hydroxylase enzymes—PHD2 and FIH-1—limiting its regenerative activity. At AAD 2026, data were presented from an innovative discovery program combining computational screening and in vitro validation to identify cosmetic ingredients capable of simultaneously targeting both HIF-1α-degrading enzymes and maximizing pathway activation.

Pharmacophore models were built from the experimental structures of PHD2 and FIH-1, enabling the virtual screening of over 2,000 China-compliant molecules and natural extracts. From this digital pipeline, 6-gingerol and niacinamide emerged as the optimal combination—each acting selectively on a single enzyme (6-gingerol on PHD2, niacinamide on FIH-1)—and were subsequently validated in a keratinocyte culture model. In vitro experiments confirmed HIF-1α stabilization and nuclear translocation upon treatment, alongside a synergistic upregulation of four representative HIF-1α target genes (EGLN3, BNIP3, CA9 and VEGF) by up to six-fold compared to individual ingredients. To meet environmental objectives, 6-gingerol was incorporated as a natural ginger extract.

Presented at AAD 2026, these findings demonstrate the power of digital approaches to accelerate the rational discovery of biologically active cosmetic ingredients. The innovative combination of niacinamide and 6-gingerol represents a mechanistically grounded and environmentally responsible candidate to support hair regeneration in the management of androgenetic alopecia.