Olaplex Nº.9 Bond Protector Serum — 90 mL | Heat & Pollution Protectant, Lightweight Shine

This silicone-free formula combines Olaplex Bond Building Technology™ with antioxidant-rich red algae extract to nourish strands, block environmental aggressors, and help hair retain style. Designed for all textures—from coily to straight—it acts as a daily protective layer that supports elasticity and gives hair a satin finish without heaviness.

How does Olaplex Nº.9 protect hair from heat and pollution?

Nº.9 forms a flexible shield around individual strands to defend against thermal stress and airborne particles. It includes ingredients that deliver heat protection up to 450°F (232°C) and a clinically measured pollution protection effect lasting up to 48 hours.

• Heat protection rated to 450°F (232°C) for styling tools.
• Red algae extract helps neutralize free radicals from environmental exposure.
• Clinically validated 48-hour pollution barrier on hair surface.
• Lightweight polymers maintain style while protecting fibers.

Will this serum weigh my hair down or leave residue?

No—Nº.9 is formulated to remain weightless and non-greasy so it suits fine and thick hair alike. The silicone-free, leave-in composition absorbs quickly and provides satin shine without buildup when used as directed.

• Ultra-light texture avoids flattening root lift or curl bounce.
• Non-silicone formula for natural feel and movement.
• Applies smoothly through damp or dry hair without sticky residue.

How does this product improve manageability and styling?

The serum reduces tangles and static to make detangling easier and styling more efficient. PVP and cetrimonium chloride help hold shape and smooth the cuticle, improving style memory and day-long wear.

• Tangle reduction for easier comb-through and less breakage.
• Anti-static action for smoother, frizz-resistant finishes.
• Style retention support from flexible polymers like PVP.
• Enhances shine for a polished, finished look.

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

Apply a small amount to towel-dried hair or to dry lengths where pollution, heat, or static are concerns. Work evenly through mid-lengths to ends, then style with heat tools if desired—Nº.9 helps protect hair up to high styling temperatures.

• Use a pump or dropper to control dosage; a little goes far.
• Distribute from mid-length to ends; avoid saturating roots unless needed.
• Reapply lightly on dry hair for frizz control or extra protection on windy days.
• Safe to combine with other Olaplex treatments and styling products.

Who is this for: Olaplex Nº.9 Bond Protector is ideal for anyone wanting lightweight, daily protection—those exposed to heat styling, urban pollution, or static-prone environments. It works for all hair types and textures seeking smoother detangling, improved style longevity, and a healthy-looking satin shine without added weight.

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.