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

This silicone-free serum combines Olaplex Bond Building Technology™ with red algae extract to protect against environmental stressors and styling heat up to 450°F (232°C). Formulated for all hair textures—from fine straight strands to dense coils—No.9 works as a styling ally and a daily protective step, improving style memory, bounceback for curls, and long-lasting satin shine without weighing hair down.

How does No.9 protect hair from pollution and daily damage?

No.9 forms an invisible barrier that helps block airborne particles and neutralize free radicals using antioxidant-rich red algae extract paired with Olaplex’s bond-building molecules. Clinically proven to provide pollution protection for 48 hours, it reduces the accumulation of pollutants that can roughen hair cuticles and cause tangling.

• 48-hour pollution protection index clinically shown
• Antioxidant red algae extract neutralizes free radicals
• Bond Building Technology™ reinforces weakened hair links
• Silicone-free formula for lightweight protection

Will Olaplex Nº.9 help with heat styling and frizz control?

Nº.9 delivers heat protection up to 450°F (232°C) while smoothing strands to reduce static and frizz during styling. It contains polymers that help maintain shape and style retention, making blowouts and heated tools more consistent and less damaging over time.

• Heat protection rated to 450°F / 232°C
• PVP polymer improves style retention and flexibility
• Cetrimonium chloride conditions and fights static
• Lightweight finish keeps hair soft, not weighed down

How does this serum affect curl bounce and detangling?

No.9 enhances curl memory and bounceback by supporting bond integrity and smoothing the hair surface to minimize snags. It also reduces tangles and slip-resistance, so combing and styling damp or dry hair is easier with less breakage risk.

• Improves bounceback for textured and curly hair
• Reduces tangles for gentler detangling and styling
• Creates satin shine that highlights curl definition
• Works on coily, curly, wavy, and straight hair types

What are the practical benefits and how do I use it?

Nº.9 is designed as a leave-in finishing and protective serum you can apply after washing and before styling. A small amount smoothed through mid-lengths and ends adds shine, detangling, and heat protection without silicones, making it suitable for daily use or pre-styling routines.

• Use on damp or dry hair before heat styling or on finished hair
• Apply sparingly to mid-lengths and ends to avoid buildup
• Works with color-treated hair to help protect color vibrancy
• Lightweight texture provides immediate satin finish

Who is this for: Olaplex Nº.9 Bond Protector suits anyone seeking a lightweight, no-silicone protective serum—ideal for people who heat-style regularly, live in urban or polluted areas, or want smoother detangling and enhanced curl memory. It’s formulated to benefit all hair textures and color-treated hair without heavy residue, offering an everyday protective and styling step for clearer shine and more manageable hair.

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.