Removes gray | Instantly in 10 min | Instantly in 5 min | Gradually with each shampoo | Instantly in 5 min | Instantly in 5 min |
Coverage | Eliminates gray | Eliminates gray | Removes some gray, not all | Eliminates gray | Removes some gray, not all |
Maintenance | Lasts until gray grows out | Lasts until gray grows out | Alternate with regular shampoo | Lasts until gray grows out | Lasts until gray grows out |