Wella Professionals Koleston Perfect ME+ Rich Naturals is a permanent hair color formulation designed for professional salon use, delivering rich, naturally-looking color results. This light brown shade offers complete gray coverage while maintaining hair structure through advanced technologies. The ME+ technology significantly reduces the risk of allergies during coloring, while the Pure Balance technology minimizes potential damage to hair fibers. This formulation produces vibrant colors with beautiful shine and allows for lightening up to three shades when used with the appropriate developer. For optimal results, mix with the activating emulsion, choosing the developer strength based on the desired outcome: 12% 40 Vol. oxidant for three shades lighter, 9% 30 Vol. oxidant for two shades lighter, 6% 20 Vol. oxidant for one shade lighter or for darkening/maintaining with gray coverage, and 4% 13 Vol. oxidant for darkening/maintaining without gray coverage. The color result depends on individual hair type and condition. This professional product is suitable for all hair types seeking naturally-looking colors with reliable gray coverage and reduced sensitivity concerns.