Can I use Artkolor Basma on grey, bleached, or chemically treated hair? — Basma 25 g - Artkolor (hair dye)

Yes, you can use Artkolor Basma on grey, bleached, or chemically treated hair, but you should not expect the same predictable result as on untreated natural hair. The product description notes that plant dyes can behave differently on light, grey, bleached, or chemically processed hair.

Because basma releases pigments that bind to the outer layer of the hair, it cannot lift or remove an existing colour. On grey or white hair, the stain is typically a cool, dark tone rather than a warm brown. On highly porous bleached hair, the powder may be taken up more quickly and the final colour can be deeper or more uneven than on normal hair. If you currently have permanent colour, the basma will stain over it, so the visible result is a blend of your base colour and the indigo.

For that reason, a strand test is not optional in this situation. Mix a small amount with hot water, apply to a hidden or small section, process, rinse, dry, and check the tone in natural light. If your scalp is sensitive, do a patch test before full application. Keep the paste away from the eye area.