For colour-treated hair specifically needing extra hydration and colour retention between salon visits, rather than for hair without chemical processing. It's sold through Cynos's professional salon channel as well as professional beauty retailers, and using it doesn't require a stylist — apply and rinse like any shampoo, ideally paired with the matching conditioner.

If you've had your hair coloured recently and want a shampoo built around that specific need rather than a general all-purpose one, this is designed as the first half of a matched hydration system, meant to work together with its companion conditioner rather than as a standalone swap for whatever you already use.

Apply to wet hair, massage into a rich lather, and rinse. For best results, follow with the Cynos 56 Nano Hydrating Conditioner. In case of contact with eyes, rinse immediately.

It's purpose-built for colour-treated hair as part of a two-step system, which is a real, stated use case rather than a repurposed general shampoo — that focus is the main strength here.

The clear downside is ingredient transparency: neither Cynos nor any retailer we checked publishes an INCI list for this product, so specific claims about what's actually cleansing or hydrating your hair aren't something we can verify or pass along.