Essential Premium Water Treatment EX Smooth is a leave-in hair treatment from Kao Japan. This water-based formula penetrates deeply to create smooth, silky hair that lasts all day. Key benefits include: repairs and prevents heat damage, speeds up blow-drying time, prevents static electricity, and contains natural 18-MEA oil (lanolin fatty acid) plus moisturizing ingredients like hydrolyzed collagen and lactic acid. Ideal for damaged, tangled hair that needs smoothing. Features a luxurious floral scent with gardenia and jasmine notes. Best applied to towel-dried hair before blow-drying.