I inherently relatively light blond hair. For a while I've dyed it red chemically, but this goes to the very substance of the hair, so I've tried vegetable dye and I am convinced! I mix them with red wine instead of water and give a little soft tint (Frisörbedarf: eg Color Fresh 7/44) added. then I let it sit for as long as I have time, because the longer the exposure time, the more intense and long-lasting the result. my hair feel much healthier since then and really shine! The only drawback, it smells a bit like wet hay, where the odor dissipates after a few washes ...