Like most direct-deposit toning shampoos, the wet pigment can temporarily stain skin, grout, acrylic tubs, and light fabrics. Wear the disposable gloves usually included in the box (or nitrile gloves from a pharmacy) during application. Apply the shampoo to damp hair in the shower, not over a bare sink, and rinse the stall or tub immediately after you finish — a quick spray with the handheld showerhead is enough. Keep a dark or old towel handy for blotting; avoid white or pastel towels until the hair is fully dry. If any pigment does land on skin, it washes off with soap and warm water within a day. On porous surfaces (unsealed grout, stone), a non-abrasive bathroom cleaner applied promptly usually removes any residue. Once hair is dry, the colour is set and won’t rub off on pillows or clothing.