Shade 5.56 is a deep red permanent color, which means it lifts and deposits pigment simultaneously. On natural hair levels 5–7 (light brown to dark blonde), you will typically see a rich, true deep red with visible shine. On darker bases (level 3–4), the red will appear more subtle — a warm, reddish tint visible mainly in sunlight rather than a vivid fire-engine red. If your hair is already colored, the existing pigment influences the outcome: previously lightened hair (level 8+) may turn brighter and more intense, sometimes leaning coppery, while hair with old dark dye may resist lifting, giving a darker, cooler red. Damaged or highly porous sections absorb pigment faster and can look darker or uneven — consider a porosity equalizer or applying to those areas last. Always do a strand test on a hidden section first; 20 minutes of processing will show you the realistic result before you commit to the full head.
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