It's A 10 Miracle Leave-in Plus Keratin 4oz 120ml spray-in, leave-on product is an enriched formula that conditions and softens while also adding an extra layer of protection and smoothness. The It's a 10 Keratin Collection builds stronger, shinier, smoother hair beginning with its most vital components. The versatile compound shields against damage-causing environmental stressors and heat, locks in moisture, guards against humidity and restores lost smoothness to dry or brittle hair.