Concentrated Hair Serum

Shine should never feel superficial. It should reflect the health beneath it.

Concentrated Hair Serum is a high-performance leave-in treatment designed to protect, smooth, and restore the hair’s surface while supporting its internal integrity. Lightweight yet deeply effective, it creates a refined finish that enhances shine, reduces frizz, and protects against daily stressors—including heat styling and environmental exposure.

Ideal for all hair types, especially those seeking softness, control, and a polished, salon-like finish without weight.

What you’ll notice over time:
✓ Enhanced shine with a smooth, reflective surface
✓ Reduced frizz and improved manageability
✓ Hair that feels protected, soft, and naturally fluid

How to use:
Apply a small amount to damp or dry hair, focusing on mid-lengths and ends.
Use before heat styling for protection, or as a finishing touch to control frizz and enhance shine.
Can also be used overnight as a leave-in treatment for added nourishment.

Pro tip: Start with a minimal amount and build as needed—this formula is highly concentrated.

Powered by advanced formulation science:
Infused with silk-derived actives and lightweight conditioning oils, this serum forms a flexible protective layer that smooths the cuticle while maintaining movement. It enhances light reflection without buildup, delivering a clean, luxurious finish.

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):
DIMETHICONE, HYDROGENATED POLYISOBUTENE, MINERAL OIL (PARAFFINUM LIQUIDUM), ISONONYL ISONONANOATE, ARGANIA SPINOSA KERNEL OIL, CAMELLIA JAPONICA SEED OIL, CARTHAMUS TINCTORIUS (SAFFLOWER) SEED OIL, OLEA EUROPAEA (OLIVE) FRUIT OIL, SIMMONDSIA CHINENSIS (JOJOBA) SEED OIL, TOCOPHEROL, TOCOPHERYL ACETATE, BHT, DIOCTYLDODECYL LAUROYL GLUTAMATE, ETHYL OLIVATE, ETHYLHEXYL METHOXYCINNAMATE, POLYGLYCERYL-2 DIISOSTEARATE, PHENOXYETHANOL, FRAGRANCE (PARFUM)