Diane Deep Night Moist Treatment Refill is a Japanese hair treatment refill pack designed for overnight hair repair and moisturizing. This sulfate-free formula features organic argan oil, moist keratin, and vitamin E capsules to deeply nourish damaged and unruly hair while you sleep. The product is especially effective for dry, thick, and frizzy hair types, leaving strands smooth and manageable. It has a pleasant moonlight berry fragrance combining fruity and floral notes. Best suited for those seeking intensive overnight moisture and frizz control.