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The cult bond-building treatment, upgraded. 10,000+ bought on Amazon in the past month. Does it really repair damaged hair? Here’s what to know.
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Quick Verdict
Olaplex N°.3PLUS Hair Repair Pre-Shampoo Treatment (100 mL)
Bond-building treatment · 4.5★ from nearly 2,000 Amazon ratings
N°.3PLUS is a 3-minute treatment you apply before shampoo. Olaplex says its patented Bond Building Technology rebuilds all three types of hair bonds for repair “from cortex to cuticle”, and that it is clinically shown to make hair 3X stronger after four uses (tested on bleached hair). It is protein-free, color-safe and made for all hair types; Olaplex suggests using it every 1–3 washes.
- Fast: only 3 minutes before shampoo
- Protein-free and color-safe
- Strong results for bleached and colored hair
- Huge fan base and easy to use
- Results are smaller on healthy, untreated hair
- Small bottle for the price
- Must be followed by shampoo and conditioner
Best for: Bleached, colored, heat-styled or breaking hair.
Skip it if: Your hair is healthy and untreated; a good conditioner may be enough.
How to Use Olaplex N°.3PLUS
- Wet your hair and towel-dry.
- Apply enough to saturate from roots to ends.
- Leave on for at least 3 minutes (longer is fine).
- Rinse, then shampoo and condition as usual.
- Repeat every 1–3 washes, as Olaplex recommends.
What Amazon Buyers Say
Across thousands of reviews, buyers most often praise how effective it is: hair feels softer and shinier, with less breakage and stronger strands. Some say it helps with very dry hair. The main complaints are about value: some think it’s worth every penny, others feel it’s overpriced, and the bottle size is a common gripe.
Olaplex N°.3PLUS: Pros and Cons at a Glance
- Best part: visible softness and less breakage, especially on bleached hair.
- Worst part: a small bottle for the price if you use it every wash.
- Money-saving tip: use it every 2–3 washes once your hair improves.
Who Should Use It?
Olaplex is best known for helping hair that has been bleached, colored or heat-styled. If you use a hot tool like the Dyson Airwrap, pairing it with a bond treatment is a popular routine. If your hair is already healthy, you may notice softness more than repair.
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Frequently Asked Questions
What is the difference between Olaplex No.3 and No.3PLUS?
N°.3PLUS is Olaplex’s upgraded pre-shampoo treatment. Olaplex says it rebuilds all three hair bonds and adds damage-defense ingredients for stronger, softer hair.
How often should I use Olaplex N°.3PLUS?
Olaplex recommends using it every 1–3 washes, depending on how damaged your hair is.
Is Olaplex good for color-treated hair?
Yes. N°.3PLUS is color-safe and is popular with people who bleach or color their hair.
Is Olaplex protein-free?
Yes, N°.3PLUS is a protein-free formula, which suits people whose hair reacts badly to protein treatments.
How long should you leave Olaplex N°.3PLUS on?
At least 3 minutes before shampooing. Many people leave it on longer.