On average, regular semi-permanent hair color fades in just 5–6 washes. With 2.Oh! Semi-Permanent Colors, powered by advanced MicroPure Pigments, you get richer, longer-lasting results that fade smoothly and evenly. The exact number of shampoos depends on the shade and your hair’s base level, but every 2.Oh! color is designed to fade beautifully without looking patchy.

Bold shades like Blue, Bordeaux Wine, Purple, and Hazelnut Brown can last up to 12–15 washes on properly bleached hair. Mid-tones such as Tropical Blue, Ginger Spice, or Peach hold true for about 6–8 washes, while delicate pastels like Lavender, Steel Grey, or Cerulean Blue last around 3–5 washes.

Yes—semi-permanent hair color is safe and gentle on your hair. Unlike permanent dyes, it doesn’t require your cuticles to be opened every single time you color. With permanent colors, each application involves a chemical process, while with semi-permanent shades, you only need to bleach your hair once to the right base. After that, you can keep refreshing or switching colors without repeatedly stressing your hair.

With 2.Oh! Semi-Permanent Colors, you get the best of both worlds—vibrant, long-lasting shades powered by MicroPure Pigments, and a formula that’s designed to nourish as it colors. Enriched with argan oil and sunflower seed extract, it helps keep your hair soft, shiny, and frizz-free.

No—semi-permanent hair colors cannot cover grey hair. These colors don’t contain ammonia or peroxide, so they can’t penetrate or lift the natural pigment inside the hair shaft. Instead, they work by coating the surface of pre-lightened or bleached hair strands. On natural grey hair, the pigments usually won’t stick or show up as intended.

They’re best if you want to try fun colors without commitment, but not if you’re looking to hide greys. If you want to experiment with semi-permanent shades, bleaching is always required first—even if your hair is naturally light or grey. Once lightened, the color can deposit properly, giving you vibrant tones that last 3–15 washes depending on the shade.

With 2.Oh! Semi-Permanent Colors, the fade is designed to be gradual and beautiful. For most people, the color fades enough to reapply or switch shades after a certain number of washes—usually 12–15 washes for bold shades like Blue, Bordeaux Wine, Purple, or Hazelnut Brown, 6–8 washes for mid-tones like Tropical Blue, Ginger Spice, or Peach, and 3–5 washes for delicate pastels like Lavender, Steel Grey, or Cerulean Blue.

But for the shade to completely wash out and return to its bleached base, it usually takes many more washes—and exactly how long depends on your starting base level and the intensity of the pigment. Because our MicroPure Pigments are so concentrated, darker shades may leave a soft tint that lingers far longer than regular dyes.

It depends on what you’re looking for. Permanent color is ideal if you want long-lasting coverage, especially for greys. But it works by using ammonia or MEA (Monoethanolamine) together with peroxide to first open up the hair cuticle, then lift the natural pigment and deposit new color inside. Because this chemical process is repeated every time you color, it can make the hair more fragile and is less flexible if you like switching shades often.

Semi-permanent color, on the other hand, is perfect if you want to experiment with bold or pastel shades without long-term commitment. With 2.Oh! Semi-Permanent Colors, you only need to bleach once with our 2.Oh! Bleach Kit (powered by Bond-Protecting Plex) to get the right base. After that, you can refresh or change colors as often as you like without reopening the cuticle. The result is vibrant payoff, a smooth fade, and a nourishing formula that keeps your hair soft, shiny, and frizz-free.