Olaplex Nº.9 Bond Protector Nourishing Hair Serum & Heat Protectant, 90 mL — Lightweight, Silicone-Free Protection

Olaplex Nº.9 Bond Protector Nourishing Hair Serum is a lightweight, leave-in antioxidant serum that protects hair from heat, pollution, tangles and static while improving shine and style hold.

Designed for all hair textures — from coily and curly to straight and wavy — this silicone-free serum combines Olaplex’s Bond Building Technology™ with Red Algae Extract to nourish strands and block environmental stressors. It gives a satin finish, helps curls spring back, and provides heat protection up to 450°F (232°C). Use it as a styling primer or finishing treatment to reduce breakage and maintain color vibrancy without weighing hair down.

How does Nº.9 protect hair from everyday pollution?

Nº.9 forms a lightweight barrier on the hair surface that helps repel airborne pollutants and neutralize free radicals. Olaplex’s formula is clinically shown to offer up to 48 hours of pollution protection, helping hair look cleaner and feel smoother between washes.

• Red Algae Extract: antioxidant-rich to defend against environmental stress.
• Bond Building Technology™: supports internal strand strength for fewer breakages.
• Silicone-free formula: shields without buildup or heavy residue.
• Clinically proven 48-hour pollution protection index.

Will this serum protect my hair during heat styling?

Yes — Nº.9 is formulated to provide thermal protection up to 450°F (232°C). It helps preserve style memory and reduces the risk of heat-related damage when used before blow-drying or flat-ironing, while still allowing flexible movement and shine.

• Heat protection rated to 450°F / 232°C.
• PVP polymer: helps maintain style shape and hold.
• Lightweight texture: won’t weigh hair down during styling.
• Use before heat tools for best protection and lasting style.

How does Nº.9 help with tangles, static, and manageability?

The serum instantly smooths the cuticle, reducing friction between strands so tangles and flyaways are minimized. Conditioning agents in the formula leave hair softer to the touch, improve comb-through performance, and reduce static for cleaner, sleeker results.

• Cetrimonium Chloride: conditions, softens, and combats static.
• Anti-tangle action: eases detangling for wet or dry hair.
• Satin finish: promotes a glossy, frizz-resistant surface.
• Supports bounceback for textured and curly hair types.

How should I use Olaplex Nº.9 for best results?

Apply a small amount to damp hair, focusing on mid-lengths and ends, then either air-dry or style with heat tools as needed. It can also be used sparingly on dry hair for polish and static control. Adjust quantity by hair density and texture — a little goes a long way.

• Damp-hair primer: distribute evenly before styling.
• Finishing serum: apply a drop to ends for shine and frizz control.
• Suitable for daily use or when extra protection is needed.
• Works with other Olaplex steps as part of a strengthening routine.

Who is this for: Olaplex Nº.9 Bond Protector is ideal for anyone seeking lightweight, non-greasy protection from heat and pollution while improving manageability and shine. It’s suitable for all hair types including chemically treated, color-treated, curly, coily, wavy, and straight hair — especially useful for people who style with heat frequently, live in urban environments, or want an anti-static finishing touch without silicones.

Ingredients

Water (Aqua/Eau), Propanediol, Betaine, Quaternium-22, Sodium Hyaluronate, Bis-Aminopropyl Diglycol Dimaleate, Cetrimonium Chloride, Panthenol, Hydroxyethylcellulose, PVP, Guar Hydroxypropyltrimonium Chloride, Furcellaria Lumbricalis Extract, Pelvetia Canaliculata Extract, Xylitylglucoside, Polyquaternium-44, Anhydroxylitol, Maltitol, Citric Acid, Trisodium Ethylenediamine Disuccinate, Xylitol, Sorbic Acid, Phenoxyethanol, Ethylhexylglycerin, Sodium Benzoate, Fragrance (Parfum), Citral, Citronellol, Hexyl Cinnamal, Limonene, Linalool.