Can the shungite mask be used on coloured hair? — Shungit Strengthening hair mask 180 ml

The card does not mention coloured hair directly; it has no data on the effect of the mask on dye. The manufacturer's claims about protecting colour and hair structure have no confirmation and are not repeated here.

General information (not a manufacturer's instruction): the colour of dyed hair can wash out in different ways – if preserving the shade is important, you can first try the mask on a small strand.