Biotop Professional 24k Hair Mask 250ml Sale! from 5100 /per Qty. Sold Out This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Biotop Professional 24k Hair Mask 250ml Exclusive formula for all hair types, specially dry damaged and colour treated hair. Enriched with 24k Gold this mask will hydrate and nourish hair Colloidal Gold and 24K Gold Tweet