Bond-building for stressed hair, paired with workable hold and deep conditioning, so frizz stays controlled and the style stays flexible. Protects against heat up to 450°F.

• FRIZZ-FREE STYLES + HEAT PROTECTION UP TO 230º C / 450 ºF

• Helps reduce breakage*

• Supports bond-building and styling in one

• Provides light, manageable hold

• Helps tame frizz

• Adds memory and shape

*When used as a system

• Bond-building while you style — the repair happens as part of styling rather than as an extra step.
• Up to 99% less breakage — Sebastian's stated result for the NO.BREAKER range.
• Heat protection — shields the strand before blow-drying or hot tools.
• Soft, manageable hold — shapes the style with no stiffness and no residue.
• Built for overprocessed hair — formulated for chemically treated and repeatedly lightened lengths.
• Works alongside K18 — external repair on the surface, where K18 works internally. Use both.

Apply to damp hair from mid-lengths to ends.

Style as usual.

For best results, apply daily.

Aqua/Water/Eau, PVP, Polyquaternium-37, Propylene Glycol Dicaprylate/Dicaprate, Behentrimonium Chloride, Guar Hydroxypropyltrimonium Chloride, Polyquaternium-4, Sodium Benzoate, Cetearyl Alcohol, Parfum/Fragrance, Phenoxyethanol, Panthenol, Malic Acid, Aminomethyl Propanol, PPG-1 Trideceth-6, Isopropyl Alcohol, Disodium EDTA, Cetyl Alcohol, PEG-20 Stearate, Acrylates/Stearyl Methacrylate Copolymer, Sorbitan Oleate, Hexyl Cinnamal, Citric Acid, Hexamethylindanopyran, Benzyl Salicylate, Terpineol, Linalool, Linalyl Acetate, Citronellol, Hydroxycitronellal, Alpha-Isomethyl Ionone, Tetramethyl Acetyloctahydronaphthalenes, Amyl Cinnamal, EDTA, Geraniol, Citrus Limon Peel Oil, Rose Ketones, Dimethyl Phenethyl Acetate, Limonene.

How does this work with K18?

They do two different jobs and I recommend both. K18 works internally, rebuilding the structure inside the hair. NO.BREAKER works externally, on the outside of the strand. That's the pairing I use in my chair — one inside, one outside. Neither replaces the other.

What does it actually do?

Builds bonds in stressed hair while adding heat protection, frizz control and flexible styling hold. Sebastian reports up to 99% less breakage.

Is it a styling product or a treatment?

Both — that's the appeal. You get the repair and the heat protection as part of styling rather than as an extra step.

Cream or spray?

Cream for more conditioning and styling control. Spray for a lighter feel and easier all-over application. Fine hair usually prefers the spray.