Difeel Rosemary & Mint Premium Hair Oil with Biotin 1.5 oz Rosemary & Mint Premium Hair Oil with Biotin 1.5 oz 2-pc set! You get both. FIRM PRICE. Infused with biotin to help promote healthy hair growth, strengthen and shine. Helps prevent hair loss and works to restore thinning hair. Helps protect against breakage. #haircare #biotin