Hair ResQ Thickening Treatment for thinning hair is a natural leave in conditioner formulated with Biotin to strengthen and revitalize hair plus caffeine to energize and invigorate hair follicles to encourage healthy hair growth. Enriched with Hibiscus Oil, Shea Butter, and Argan Oil, Thickening + 5 in 1 Miracle Leave-In Conditioner combines multiple hair benefits into one convenient spray.