Smooth Finishing Treatment

The final step isn’t optional. It’s what defines everything that came before.

Smooth Finishing Treatment is a precision leave-in designed to seal the hair surface, refine texture, and lock in smoothness with a weightless touch. Applied before blow-drying, it provides heat protection and preps the hair for a smoother finish. Applied after, it enhances alignment, reduces frizz, and creates a polished finish that holds its form without stiffness or buildup.

Ideal for hair that has been styled, smoothed, or treated—and needs that last layer of control and refinement.

What you’ll notice over time:

✓ Heat protection through blow-drying
✓ A smoother, more polished surface
✓ Frizz visibly controlled without heaviness
✓ Hair that feels soft, aligned, and finished

How to use:
Apply a small amount to damp or dry hair, focusing on mid-lengths and ends.
Use before blow-drying to prep and protect, or as a final step after styling to refine texture and control frizz.

Pro tip: Apply a pea-sized amount to palms and rub together to warm the product before application.

Powered by advanced formulation science:
Formulated with smoothing agents and lightweight conditioning polymers, this treatment creates a flexible protective layer that aligns the cuticle, reduces friction and shields the hair through blow-drying—delivering a clean, refined finish that lasts.

Crafted in Japan by Kosé. SKNY brings salon technology home — formulated and made in Japan by Kosé, from Stephen Knoll New York.

Full Ingredients (INCI):
WATER (AQUA), PROPYLENE GLYCOL, BUTYLENE GLYCOL, ALCOHOL, CETEARYL ALCOHOL, DIMETHICONE, BEHENYL ALCOHOL, DIPHENYLSILOXY PHENYL TRIMETHICONE, AMPD-ISOSTEAROYL HYDROLYZED COLLAGEN, ASCORBIC ACID, CARTHAMUS TINCTORIUS (SAFFLOWER) SEED OIL, MANNITOL, OLEA EUROPAEA (OLIVE) FRUIT OIL, PROLINE, SIMMONDSIA CHINENSIS (JOJOBA) SEED OIL, TOCOPHEROL, BEESWAX (CERA ALBA), BEHENTRIMONIUM CHLORIDE, BHT, C12-15 ALKYL BENZOATE, ETHYLHEXYL METHOXYCINNAMATE, FRUCTOSE, ISOPROPYL ALCOHOL, MINERAL OIL (PARAFFINUM LIQUIDUM), PEG-10 HYDROGENATED CASTOR OIL, PEG-45M, POLYQUATERNIUM-10, PVP, STEARTRIMONIUM CHLORIDE, TRIETHYLHEXANOIN, METHYLPARABEN, FRAGRANCE (PARFUM)