OLAPLEX Nº.7 Bonding Oil – the Little Bottle That Does a Lot
If there’s one product that consistently gets talked about across our salons – by stylists and clients in equal measure – it’s the OLAPLEX Nº.7 Bonding Oil. And it’s not hard to see why. This lightweight, golden little bottle was named one of Google’s Top 100 Products of 2025, and anyone who’s used it will tell you it absolutely deserves the recognition.
At Headmasters, we’ve been long-time fans of Olaplex for its bond-building technology and genuine results. The Nº.7 is a particular favourite – the kind of product that once it’s in your routine, you genuinely can’t imagine going without it.
What Makes OLAPLEX Nº.7 So Special?
Most hair oils do one thing: coat the surface of the hair to create the appearance of shine. The Nº.7 does something altogether more interesting. Using Olaplex’s patented bond-building technology, it works at a molecular level to actively repair damage from within – while simultaneously delivering that gorgeous, polished finish on the outside.
The result is hair that doesn’t just look healthier. It genuinely is healthier, with every use.
It’s also ultra-lightweight, which means it works beautifully on all hair types – fine, thick, straight, curly, colour-treated or natural – without ever feeling heavy or greasy. And it offers heat protection up to 230°C, making it an essential step before any heat styling.
How to Use It Like a Pro
Our stylists use this one constantly – here’s how to get the most out of it at home:
On damp hair before styling – apply 1–3 drops to mid-lengths and ends before blow-drying, straightening or curling. It protects against heat damage and leaves a beautiful shine from the very first use.
On dry hair as a finisher – a single drop worked through the ends tames flyaways, adds gloss and gives that polished, just-left-the-salon look without any heaviness.
Layered with Olaplex Nº.6 Bond Smoother – for the ultimate frizz-fighting, smoothing combination, apply Nº.6 first on damp hair, then follow with Nº.7. The two together are genuinely brilliant.
A little really does go a long way – start with one drop and build up if needed.
Pick It Up at Headmasters
The OLAPLEX Nº.7 Bonding Oil is available to purchase in all Headmasters salons. Ask your stylist at your next appointment and they’ll show you exactly how to get the best out of it for your specific hair type.
Find your nearest Headmasters salon and book today – and for product tips and hair inspiration, follow us at @headmastersuk on Instagram.
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Can I use OLAPLEX Nº.7 Bonding Oil if I have oily hair?
Absolutely – Nº.7 is ultra-lightweight and absorbs quickly without any greasiness. Just use one drop, focusing only on the mid-lengths and ends, and avoid the roots entirely.
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Can I use OLAPLEX Nº.7 Bonding Oil before heat styling?
Absolutely. Nº.7 offers heat protection up to 230°C, making it perfect for use before blow drying, straightening, or curling.
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Can I layer OLAPLEX Nº.7 Bonding Oil with other OLAPLEX products?
Yes – it’s designed to work as part of the full Olaplex system. Paired with the Olaplex Nº.4 Shampoo and Nº.5 Conditioner, it makes a really powerful at-home routine for colour-treated or damaged hair.
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How often should I use OLAPLEX Nº.7 Bonding Oil?
As often as you like. Most clients find 2–3 times a week works brilliantly, especially before heat styling, but it’s gentle enough for daily use if your hair needs it.
