Is this shampoo suitable for color-treated or bleached hair, and how does it affect hair color longevity?

BISOU 3D Nourishment & Restoration Shampoo is designed for hair that is rough, dull, or prone to tangling, which includes bleached, frequently blow-dried, or chemically treated hair. The formula uses a 100% chamomile and burdock hydrolate base instead of plain water, providing a gentler cleansing experience that helps the hair shaft hold moisture better. This is particularly relevant for porous, bleached hair, which tends to lose hydration quickly and feel straw-like.

While the shampoo does not contain specific UV filters or color-locking polymers, its key active ingredients support the structural integrity of damaged hair. Brazil nut extract provides fatty acids and proteins that help condition the outer layer of the hair, making strands feel less coarse and reflect light better. Manuka honey extract acts as a humectant, attracting water to reduce the dry, brittle texture often associated with bleaching. By improving the hair's ability to retain moisture and smoothing the cuticle, this shampoo can help maintain the softness and shine of color-treated hair, though it is not a substitute for dedicated color-protection products.

For best results with color-treated hair, pair this shampoo with a conditioner or mask from the same nourishing category. Since shampoos primarily cleanse and prepare the hair, following up with a leave-in or rinse-out conditioner helps seal in the moisture provided by the hydrolate base and extracts. Avoid hot water when washing, as high temperatures can strip natural oils and exacerbate dryness in bleached hair.