This is for anyone dealing with brassiness or yellow undertones in blonde, lightened, highlighted, gray, or white hair — a common issue after bleaching, highlighting, or as natural gray hair ages. It's positioned for both men and women in this range. Because it's a rinse-out step used after shampooing (not a professional toning service), it's suitable for home use by people already maintaining color between salon visits, rather than requiring a stylist to apply it.

Purple shampoos and masks tone but often leave hair feeling coated or dry because they skip real conditioning. This one is formulated as a conditioner first, with the violet-cancelling dye built in, so blonde hair gets moisture and damage repair from the same step that's neutralizing yellow tones.

• Shampoo hair first, ideally with KMS Color Vitality Blonde Shampoo
• Apply a small amount of conditioner to mid-lengths and ends
• Gently massage through
• Leave for 1–2 minutes
• Rinse thoroughly

• Pro: tones and conditions in one step, so there's no separate purple mask needed on top of a normal conditioner
• Pro: the brand states visible de-yellowing after a single use
• Con: as a direct-dye toner, leaving it on longer than 1–2 minutes on very light or white hair risks over-depositing violet tone
• Con: results depend on how brassy the starting hair is — heavily yellowed hair may need repeated use to see the full effect