- A must have shampoo for color protection and restored radiance. Seals in color to make it last up to 3 times longer. Preserves color vibrancy. Use to reduce yellowing of grey and ash blonde hair. UV-Filter to protect from UV rays. Optical brighteners (enhances blonde tones). Cationic dye (fights yellowing). Rhubarb lavender (known for enhancing blonde tones and calming). Lather. Rinse. Repeat if necessary.