Product Overview Now in a bigger bottle so you don't have to worry about the product running out. It’s a 10 Miracle Leave-in Plus Keratin, smooth, sleek, and strong are all simpler than ever thanks to the essential conditioners and effortless spritz-on application of It’s a 10 Miracle Leave-In Conditioner Plus Keratin. This lightweight, deliciously-smelling conditioner penetrates deep into the hair shaft to rebuild dry and damaged hair from the inside out. Have perfectly in shape all day everyday.