Olaplex Nº.9 Bond Protector Nourishing Hair Serum Review

If you have dry, curly hair, you know that finding a product that hydrates, defines, and protects without weighing your curls down can feel like an endless search. Enter Olaplex Nº.9 Bond Protector Nourishing Hair Serum, a product that promises to provide nourishment, frizz control, and protection for your hair while maintaining the integrity of your natural curls. As someone with dry, curly hair, I was excited to give this serum a try. 

Olaplex Nº.9 comes in a sleek, modern-looking bottle with a pump dispenser. The design feels both luxe and practical.  Its easy to hold and control the amount of product you dispense. The serum itself has a lightweight, gel-like consistency that isn’t overly runny, but not too thick either. It has a subtle, pleasant fragrance that’s not overpowering, just a light, clean scent that dissipates after a few minutes.

Curly hair tends to be on the drier side, and finding products that add moisture without causing frizz or weighing down curls is crucial. Olaplex Nº.9 is formulated with a combination of the brand’s signature Bond Building technology and nourishing ingredients, which protect hair from environmental damage and help prevent frizz.

When I first applied the serum to my damp hair, I immediately noticed how easily it absorbed into my strands. It didn’t leave any greasy residue or film on the hair, which is a common issue I’ve had with other nourishing serums. Instead, it felt like my curls drank up the product, leaving them soft and hydrated.

The serum doesn’t have the heavy, rich feel of an oil, but it still delivers a solid dose of moisture. After air-drying, my curls were visibly more defined, and the texture felt smoother. Even on second day hair, I noticed a reduction in frizz, which is a rare and welcome feat for dry curls like mine.

Curly hair and frizz go hand in hand, especially when it's dry. Olaplex Nº.9 did a great job of smoothing my curls without weighing them down. It didn’t leave any sticky or crunchy feeling, which is sometimes the case with heavier anti-frizz products. The serum’s lightweight formula kept my curls bouncy and soft to the touch, yet still in control of the frizz.

Olaplex Nº.9 isn’t marketed as a curl-defining product, but it certainly helped enhance the natural texture of my hair. The serum provides a slight hold without making the curls stiff or crunchy. It gave my curls a soft, natural definition that lasted for hours. After applying it, my hair felt light and fluffy, but not puffy. The serum also helped minimize the appearance of flyaways, giving my curls a polished, voluminous look.

As someone who occasionally uses heat tools, I was pleased to see that Olaplex Nº.9 also offers heat protection (up to 450°F or 232°C). This makes it an excellent addition to my styling routine, as it protects my curls from damage caused by blow-drying or flat-ironing while still keeping the curls intact and healthy.

After using the Olaplex Nº.9 consistently for a few weeks, I noticed some long-term benefits as well. My hair felt less dry, and my curls seemed to hold their shape better without needing as much touch-up or extra product. The overall health of my hair also seemed to improve, which I attribute to the bond-building technology that Olaplex is known for. My hair appeared shinier, and split ends seemed less noticeable, which is a huge plus for curly hair.

Overall, I’m very impressed with the Olaplex Nº.9 Bond Protector Nourishing Hair Serum. It delivers on its promises of hydration, frizz control, and heat protection while enhancing the natural texture of my curls. It's a perfect addition to any curly hair care routine, especially for those with dry hair looking for a lightweight, nourishing serum that doesn’t compromise curl definition.

This product costs £28 for 90ml. While it’s a bit of an investment, the quality and long-term benefits are well worth it. If you’re looking to improve the health of your curly hair, reduce frizz, and protect your strands from damage, Olaplex Nº.9 is definitely worth considering. It’s not just about styling, it’s about giving your curls the nourishment they deserve.

Have you tried Olaplex Nº.9 for your curls? Share your experience in the comments.

 Leigh💜

I purchased this product with my own money