Will this henna dye my grey hair completely, or will it just add shine?

Because SATTVA Henna Natural Light Brown relies on plant pigments that coat and bind to the outer layer of the hair rather than penetrating the cortex like oxidative dyes, the result on grey hair is distinct from pigmented hair. On completely white or grey strands, the henna pigment typically deposits more visibly, often resulting in a brighter, more coppery or golden-brown tone depending on the specific plant composition. On darker, pigmented hair, the effect is usually subtler, adding a softer brown reflection and extra depth rather than fully covering the original color.

The final shade also develops gradually over 48 hours after rinsing, so the initial color upon washing may appear lighter or more orange-toned before settling into the final light brown hue. If you have heavily bleached or very porous hair, the pigment may absorb more intensely, potentially leading to a darker or more uneven result than expected. For best outcomes, it is wise to expect a nuanced, individual result that enhances your natural hair rather than providing a uniform, chemical-like coverage.