Mill Creek Botanicals Biotene H-24 Natural Extra Body Styling Gel With Biotin & Silk Protein adds extra control and sheen to your hair. Special silk proteins hair. Special silk proteins help moisturize hair all day Also, the benefits of Biotin make this concentrated formula especially effective on fine and thin hair. Non-drying. Created to make hair look and feel thicker, Biotene H-24, from Mill Creek Botanicals, is the solution for thinning hair!