yokilabo NARTH Sleek & Relax Shampoo (420ml / Refill 350ml) A shampoo formulated with penetrating fermented collagen and dense fermented repair serum to tame frizz and waves, leaving hair smooth and manageable. It deeply hydrates the hair from within and coats each strand, providing long-lasting moisture and protection. Enriched with hydrating keratin and moisture-retaining silk to further reduce frizz and waviness, promoting sleek, silky hair. Scented with a refreshing blend of sweet orange and neroli for a soothing, relaxing experience.