Biolage Ultra Hydra Source Deep Treatment Mask - 16.9oz is an intense moisture-replenishing treatment specially formulated for very dry, coarse, or overprocessed hair. Enriched with aloe and cupuaçu butter, this rich, creamy mask deeply hydrates and nourishes to restore softness, shine, and manageability. In just 3–5 minutes, hair feels smoother, healthier, and visibly revitalized with long-lasting moisture and frizz control. Ideal for weekly use to transform parched strands into silky, hydrated hair.