aveda black malva shampoo 33.8 fl oz/1 litre aveda black malva shampoo 33.8 fl oz/1 litre brings out cool, deep tones in natural and tinted dark shades and discourages the appearance of red or brassy tones. contains organically grown aloe, black tea and emollient-rich black malva that's been wild-crafted-sustainably gathered by hand in its natural habitat.