The Ultimate Olaplex Guide: Understanding No.0 to No.8
This blog breaks down the entire Olaplex collection, from No.0 to No.8, explaining what each product does, how to use it, and when to use it for the best possible results. If you’ve ever felt overwhelmed by the numbers and names, this simple guide is all you need.
HAIRCARE
If you have ever stood in front of a shelf full of Olaplex products and wondered which one to buy, you’re not alone. Between the different numbers, bottles, and steps, the collection can feel like a puzzle. But don’t worry, this is your complete breakdown of every product from No.0 through No.8, explained in plain language so you can finally know how to use them and what each one really does.
Olaplex No.0 – Intensive Bond Building Hair Treatment
What it does:
No.0 works as a primer that prepares and strengthens your hair before deeper treatments. It rebuilds broken bonds and enhances the power of other Olaplex products, especially No.3.
How and when to use it:
Apply it to dry hair, focusing on mid-lengths and ends. Leave it on for about 10 minutes, then apply No.3 directly on top without rinsing. This combination delivers maximum repair. Use once a week or before any major chemical treatment.
What it does:
This cult favorite is an at-home bond builder. It repairs damage from heat, color, and styling, restoring strength and elasticity.
How and when to use it:
Apply generously from roots to ends on damp hair, comb through, and leave on for at least 10 minutes (longer if possible). Rinse, shampoo, and condition afterward. Use once a week, or more frequently for very damaged hair.
Olaplex No.4 – Bond Maintenance Shampoo
What it does:
No.4 gently cleanses the hair while rebuilding and maintaining the internal bonds. It helps reduce breakage, frizz, and dryness while leaving hair soft and manageable.
How and when to use it:
Use as your regular shampoo. A small amount goes a long way, so start with a tiny pump, lather, and rinse thoroughly. Follow with No.5 Conditioner for best results.
Olaplex No.5 – Bond Maintenance Conditioner
What it does:
This conditioner deeply hydrates and restores while continuing to repair broken hair bonds. It helps detangle and smooth the hair without weighing it down.
How and when to use it:
After shampooing with No.4, apply a generous amount from mid-lengths to ends. Leave it on for 3–5 minutes, then rinse well. Use every time you wash your hair.
Olaplex No.6 – Bond Smoother Leave-In Styling Cream
What it does:
No.6 is a leave-in cream that hydrates, strengthens, and eliminates frizz for up to 72 hours. It also speeds up blow-dry time and adds soft smoothness.
How and when to use it:
Work a small amount through damp or dry hair, focusing on mid-lengths and ends. Use before heat styling or air-drying. Can be used daily or whenever your hair needs smoothing.
What it does:
This ultra-light oil boosts shine, strengthens hair, and provides heat protection up to 232°C. It complements any styling routine and enhances softness.
How and when to use it:
Apply 1–2 drops to damp or dry hair before styling. You can mix it with No.6 for extra smoothness or use it alone for added shine and protection.
Olaplex No.8 – Bond Intense Moisture Mask
What it does:
No.8 is a highly concentrated hair mask that delivers deep hydration and body while continuing to rebuild bonds. It’s perfect for hair that feels dull, brittle, or dry.
How and when to use it:
Apply to clean, damp hair (after No.4), and leave it on for 10 minutes. Rinse thoroughly and enjoy instantly softer, shinier hair. Use weekly or as needed for extra moisture.