Dr Groot Scalp Revitalizing Solution Hair Thickening Shampoo Biotin 700ml 23.6oz Dr. Groot Scalp Revitalizing Solution Hair Thickening Shampoo is formulated to visibly volumize hair from the root while improving scalp moisture by up to 169% in just two weeks. This dermatologically tested formula features a powerful blend of Biotin and capsulated prebiotics to support a healthy scalp environment for all scalp types. The large 700ml pump bottle provides a generous supply of this revitalizing treatment designed to strengthen and thicken thinning hair. Keywords: Dr Groot, hair thickening shampoo, scalp revitalizing, biotin shampoo, prebiotic hair care, volumizing shampoo, thinning hair treatment, scalp health, korean hair care, k-beauty, hair growth support, dermatologist tested