Wella Koleston Perfect 4/0 Medium Brown/Natural Permanent Color / 2 oz. SK-321446 it transforms every color service

it transforms every color service into a work of art

The bonding technology in this leave-in treatment repairs broken hair bonds

Professional Organization That Saves Time and Reduces Stress

Cure for 60 seconds under LED or two minutes under UV if using a compatible top coat

Wella Koleston Perfect 4/0 Medium Brown/Natural Permanent Color / 2 oz. SK-321446 it transforms every color serviceSchwarzkopf Professional IGORA 4 0 Medium Brown. Achieve rich, natural looking medium brown results with this foundational shade from the IGORA permanent color line. Designed for professional colorists, 4 0 reliably delivers full coverage and depth, making it a go to choice for both standalone applications and custom blending. The balanced neutral base provides consistent, predictable outcomes across varying hair textures. Quick Take This medium brown