If you want to know which hair smoothing treatmentexcels in smoothness, glow, and overall repair—especially if your hair is damaged from coloring or heat—then Olaplex No. 7 Bonding Oil might just become your new holy grail. Having tested it (thanks to a complimentary sample), I can be certain that this tiny bottle delivers salon-quality results without needing to set foot at the hair treatment spa.

What Is Olaplex No. 7 Bonding Oil

This light, intensely-concentrated hair smoothing serum is one of Olaplex’s popular offerings, famous for their proprietary bond-repairing technology. Unlike a regular keratin in curly hair treatment, this oil does not change your hair structure—rather, it operates at the molecular level to repair damaged bonds, smooth frizz, and offer up to 450°F heat protect

Key Ingredients:

• Bis-aminopropyl diglycol dimaleate: Olaplex’s proprietary bond-building ingredient
• Moringa and sunflower seed oil: Contribute to shine and hydration
• Fermented green tea oil: Light and moisturizing

My Hair Type: Oil-prone, But Desperately in Need of Smoothness

With hair resting just above the shoulder and naturally wavy texture, my greatest annoyances are frizz, flyaways, and oiliness. I didn’t understand how adding oil to my routine would be beneficial—especially when I already reach for dry shampoo daily—but this product was an exception. It didn’t have a greasy feel whatsoever but more of a light serum for men’s hair or women’s hair rather.

The Feel: Soft, Non-Greasy, and Surprisingly Weightless

Either used on wet locks or post-style, Olaplex No. 7 immediately made my hair softer and easier to deal with. It didn’t put weight on it or leave it greasy-looking. As opposed to some argan hair serum or DIY home protein hair treatment products, this left my locks residue-free and gave them a glass-like shine.

Why It’s Worth the Price Tag

Let’s get real—$28 for a 1 oz. bottle could be considered pricey. But compared to the cost of keratin hair treatment or frequent hair botox treatment at home, this is a far cheaper option. One bottle can last months because of the little amount used per application. Additionally, it decreases salon visits’ frequency by keeping your hair healthy in between treatments.

How It Compares

If you’re considering a natural hair treatment or at home keratin hair treatment, this product could complement your routine beautifully, especially if you want to avoid the high price of keratin hair treatment in salons.

Bonus Tip: Use It Like This

Apply a few drops using the “prayer hands” technique, running it along the top layer of your hair or tips. For an overnight treatment, braid your hair and let the oil work its magic while sleeping. It’s a trick I borrowed from beauty professionals that prevents oil from transferring to your skin while you sleep. It’s especially handy for those with protein treatments curly hair routine or dealing with oily hair with dry scalp issues.

Final Verdict: A Must-Have for Healthier Hair

If you’ve been wondering whether to buy Olaplex No. 7 Bonding Oil, the answer is a resounding yes. It delivers impressive results without the weight or grease of a typical hair oil serum for hair for men and women. Whether your hair is straight, wavy, or curly, it smooths, repairs, and protects like a pro.