Formulated specifically for men with gray, graying, or white hair who want to reduce a yellow or brassy cast, as part of American Crew's men's grooming line (the same violet/blue toning approach can also be used on beard hair). It's a straightforward at-home product needing no professional experience, used in place of a regular shampoo.

Its role is narrow and specific: neutralizing yellow tones in gray or white hair through violet/blue toning pigments, built into a men's shampoo that can replace a regular shampoo rather than requiring a separate toning step.

Wet hair thoroughly. Massage a small amount into hair and scalp (or beard, if desired). Rinse well. Repeat if a stronger toning effect is wanted, but avoid leaving it on for extended periods on very light or white hair, since the toning pigments can over-deposit and leave a faint blue-violet cast.

Pros: the violet/blue toning pigments target yellow discoloration specifically, which is more precise than a plain clarifying shampoo; hydrolyzed milk protein adds a conditioning boost for hair that tends to feel drier as it grays; formulated and marketed specifically for men's grooming routines rather than as a generic unisex product.

Cons: it contains sodium laureth sulfate, so it isn't a sulfate-free formula despite being positioned for regular use; the toning dyes can over-deposit if left on too long or used often on very light gray or white hair, leaving a slight blue-violet cast; it also contains methylparaben and propylparaben as preservatives, which some users specifically avoid.