Olaplex No.9 Bond Protector Nourishing Hair Serum

Lightweight anti-pollution & heat protection serum for all hair types

Olaplex No.9 Bond Protector Nourishing Hair Serum is a weightless, silicone-free leave-in serum designed to protect hair from daily damage while improving manageability, shine and smoothness.

Formulated with antioxidant-rich red algae extract and Olaplex Bond Building Technology™, No.9 helps shield hair from environmental pollutants for up to 48 hours while providing heat protection up to 232°C (450°F).

Unlike traditional serums that rely on heavy silicones, No.9 delivers protection and performance without weighing hair down — making it ideal for fine, damaged, coloured and textured hair alike.

Why professionals recommend Olaplex No.9

• Protects hair from heat up to 232°C (450°F)

• Shields against pollution and environmental stress for up to 48 hours

• Helps reduce tangles, static and frizz

• Improves manageability and smoothness

• Adds a soft, satin-like shine without residue

• Silicone-free and suitable for all hair types and textures

What makes No.9 different from a hair oil or serum?

Olaplex No.9 is not a traditional oil.

Professionals use it as a protective styling serum, not just a shine product. It:

• Protects hair during styling

• Helps prevent damage caused by pollution and heat

• Supports hair strength with bond-building technology

It’s ideal for clients who want lightweight protection and control without heaviness.

How to use

Apply a small amount to damp, towel-dried hair, working from the ends upward toward the roots.

Style as desired:

• Air-dry for soft, natural texture

• Blow-dry for a smooth, polished finish

• Diffuse to enhance waves or curls

Apply sparingly to dry hair to control frizz and static or add a light shine finish.

Suitable for

• All hair types and textures

• Fine hair that can’t tolerate heavy oils

• Coloured or chemically treated hair

• Hair exposed to heat styling or pollution

• Hair that tangles easily or feels static-prone

Professional tip

Olaplex No.9 works best as part of a complete routine. Use it after cleansing and treatments, and before heat styling, to help preserve repair results and protect hair from daily stress.

Pairs perfectly with:

• Olaplex No.4C (for clarifying and reset)

• Olaplex No.3 (for bond repair)

• Professional heat styling tools

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.

Olaplex No.9 vs Hair Oil: What’s the Difference?

Many people assume all serums and oils do the same job — but professionals use them very differently.

Olaplex No.9 Bond Protector Serum

• Purpose: Protects hair from heat and environmental damage

• Texture: Lightweight, serum-like

• Heat protection: ✔ Up to 232°C (450°F)

• Pollution protection: ✔ Shields hair for up to 48 hours

• Bond support: ✔ Yes (Olaplex Bond Building Technology™)

• Finish: Soft, satin shine

• Best for: Daily protection, fine hair, styling, frizz & static control

Traditional Hair Oils

• Purpose: Add shine and softness

• Texture: Heavier, oil-based

• Heat protection: ✖ Often limited or none

• Pollution protection: ✖ No

• Bond support: ✖ No

• Finish: Glossy or oily

• Best for: Sealing ends, very dry or coarse hair

Professional Verdict

Olaplex No.9 is a protective styling serum, not a shine oil.
Professionals use it before styling to protect hair and improve manageability.

Hair oils are usually used after styling to add shine or smooth the ends.

👉 For best results, many professionals use both:

• No.9 before heat styling

• Hair oil on dry ends if needed

Not Sure Which One You Need?

If your hair is:

• Fine, damaged or heat-styled → Start with Olaplex No.9

• Very dry or coarse at the ends → Add a small amount of oil after styling

Davines HEART OF GLASS Sheer Glaze vs Olaplex No.9: Which Should I Choose?

Both products protect hair during styling — but professionals use them for different hair needs.

Davines HEART OF GLASS Sheer Glaze

Best for blonde health, shine & daily styling

• Primary purpose: Heat + UV protection for blonde hair

• Focus: Blonde care, strength and shine

• Texture: Lightweight leave-in thermal fluid

• UV protection: ✔ Yes

• Heat protection: ✔ Yes (blow-dry & styling tools)

• Best for: Blonde, bleached or highlighted hair

• Finish: Soft, silky, luminous

Professional note:
Sheer Glaze is ideal for blondes who want ongoing protection and visible shine without heaviness.

Olaplex No.9 Bond Protector Nourishing Hair Serum

Best for bond support, pollution defence & heat protection

• Primary purpose: Heat + pollution protection

• Focus: Bond protection and manageability

• Texture: Lightweight serum

• Pollution protection: ✔ Up to 48 hours

• Heat protection: ✔ Up to 232°C

• Best for: All hair types, including damaged or colour-treated hair

• Finish: Smooth, satin shine

Professional note:
No.9 is a protective styling serum designed to defend hair from daily environmental and heat damage.

💡 Professional Verdict

These products are not replacements for each other — they can be used based on hair needs.

✔ Choose Sheer Glaze if your priority is blonde care, shine and UV protection
✔ Choose Olaplex No.9 if your priority is bond support and pollution defence

👉 Many professionals use both:

• Sheer Glaze for blonde-specific care

• No.9 for extra protection in high-heat or polluted environments

Still Not Sure?

If your hair is:

• Blonde and fragile → Start with HEART OF GLASS Sheer Glaze

• Damaged, heat-styled or city-exposed → Start with Olaplex No.9

• Blonde + heavily styled → Use both together