Marine-Biomass-Derived Melanin–Chitosan Composites as Natural Black Hair Colorants: Charge Reversal and Electrostatic Deposition Mechanism
Toshihiko Matsuura & Airi Nakajima · Organics · 2026
Conventional oxidative hair dyes rely on aromatic amines, raising concerns about human health and environmental safety. This study reports a natural hair-coloring system using size-controlled ink particles (SIPs, ~170 nm in diameter) from cuttlefish ink and chitosan. Because both...
Open access
Research Article
10.3390/org7020023