Add this to your Christmas list! K18 is engineered to renew hair to a like-new state, reinstating hair's core strength + elasticity in the innermost layers. Creating softer, smoother hair with less noticeable split ends. Your hair will be more manageable and easier to style over time, so you need less heat to get the same results. K18 will improve the integrity of your hair, reversing ongoing damage from styling or environmental irritants. At sephora on sale and in holiday packs right now!