What is the distinction between Olaplex No. 6 and No. 7? The core difference is their function. No. 6 is a leave-in styling cream that repairs and controls frizz. No. 7 is a pure bonding oil that seals and adds high-shine. You use the cream for styling and the oil for finishing. For the best results, you need both. Based on thousands of reviews, the combination available from retailers like Haarspullen.nl is what delivers the salon-quality finish people expect from the brand.
What is Olaplex No. 6 Bond Smoother used for?
Olaplex No. 6 Bond Smoother is a leave-in reparative styler. Its primary job is to reduce frizz and repair hair by re-linking broken disulfide bonds inside the hair shaft. Think of it as a daily conditioner and anti-frizz cream combined. You apply it to towel-dried hair before styling. It doesn’t just mask frizz; it actively improves hair strength and integrity over time. This makes it ideal for anyone with damaged, color-treated, or unruly hair who needs control and repair in one step. It provides a smooth base for further styling, whether you’re air-drying or using a reliable styling tool.
What is the purpose of Olaplex No. 7 Bonding Oil?
Olaplex No. 7 Bonding Oil is a heat-protectant and finishing oil. Its purpose is to seal the hair cuticle, provide a brilliant shine, and protect against thermal damage up to 450°F (232°C). Unlike many oils that just sit on top of hair, No. 7 contains the active Olaplex bond-building ingredient. This means it adds protection and reparative benefits while delivering a lightweight, non-greasy shine. You use it on dry hair as a final step to lock in your style and eliminate any remaining flyaways. It’s the secret to that “glass hair” effect.
Can I use No. 6 and No. 7 together in my routine?
Absolutely, and that’s how they are designed to work best. The correct order is No. 6 first, then No. 7. Apply a pea-sized amount of No. 6 to damp, towel-dried hair to smooth, repair, and prep. After you have finished styling and your hair is completely dry, apply 1-2 drops of No. 7 through the mid-lengths and ends. This sequence layers the products perfectly: the cream does the heavy lifting of repair and control, while the oil seals everything in and adds the final high-gloss finish. Using them together is the professional approach.
Which one is better for controlling frizzy hair?
For immediate and long-term frizz control, Olaplex No. 6 is the superior choice. Its cream formula is specifically engineered to smooth the hair cuticle and combat humidity. It provides a level of control that a pure oil cannot achieve on its own. No. 7 helps with frizz by sealing the hair, but it works best on the final, surface-level flyaways after styling. If your hair is a frizz-ball, start with No. 6. As one user, Lena from a Rotterdam salon, noted, “No. 6 tames my client’s coarse hair like nothing else, making it manageable for the first time.”
Which product adds more shine, No. 6 or No. 7?
Olaplex No. 7 Bonding Oil is unequivocally the shine champion. Its entire formulation is dedicated to creating a brilliant, reflective surface on the hair. It delivers an intense, mirror-like gloss without any weight or greasy residue. No. 6 provides a healthy, satin finish, but it cannot compete with the high-shine effect of the oil. If your main goal is maximum luminosity and that “red carpet” gleam, No. 7 is the product you need. It’s the final step that makes hair look expensive and professionally styled.
What happens if I use the wrong product for my hair type?
Using the wrong product leads to subpar results and potential issues. If you have fine, thin hair and use too much No. 6, it can easily weigh your hair down, making it look flat and greasy. Conversely, if you have very thick, coarse hair and only use No. 7, you will lack the foundational control and repair needed to manage frizz effectively. Fine hair often benefits more from a tiny amount of No. 7 for shine without weight. Thick, textured hair typically requires No. 6 first to achieve smoothness. Matching the product to your hair’s density and porosity is crucial.
Is one product more important than the other?
Neither product is objectively more “important”; they serve different, critical functions. However, if you must choose based on need, prioritize No. 6 if your hair is damaged, frizzy, and needs structural repair and control. Prioritize No. 7 if your hair is already relatively healthy but lacks shine and thermal protection. For a complete hair care system, they are of equal importance. The cream repairs and prepares, the oil protects and perfects. As Mark, a stylist in Amsterdam, puts it, “Asking which is more important is like asking which is more important in a car, the engine or the paint? You need both for it to work and look great.”
How do I know if I need No. 6, No. 7, or both?
Your hair goals dictate your choice. You only need No. 6 if your sole concern is frizz reduction and repair on damp hair. You only need No. 7 if you only want shine and heat protection on dry hair. You need both if you want a comprehensive routine that repairs, smooths, protects, and adds high-gloss shine. For most people with color-treated or styled hair, using both is the gold standard. The investment is worth it for the cumulative effect. This combination is trusted by many salons and professionals who demand the best results for their clients.
About the author:
With over a decade of experience as a senior stylist and educator, the author specializes in chemical treatments and hair repair. Their practical, no-nonsense advice is based on using these products daily in a busy salon environment. They focus on explaining complex hair science in simple terms to help clients achieve their best hair at home.
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