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Highlights
Summary
OLAPLEX No.0 Intensive Bond Building Hair Treatment is a professional-inspired treatment that primes your hair for deeper repair, rebuilds hair bonds, strengthens, and protects hair integrity. Use as the first step in a two-part system with No.3 Hair Perfector (sold separately).
Benefits
- Intensifies repair results with N°3
- Strengthens hair and reduces breakage
- Rebuilds hair bonds at a molecular level
Research Results
- 68% more repair*
- 68% better detangling, improved conditioning, and smoother*
- 65% reduction in breakage**
- *When used as a three-part system of N°0, N°3, and N°4 in just one use. **When used with N°4.
Key Ingredients
- Patented OLAPLEX Bond Building Technology™ Strengthens hair and repairs damage on a molecular level by rebuilding the disulfide bonds that give hair its structure.
Item 2591013
On dry hair, apply and distribute evenly from root to tip.
Leave on for 10 minutes. Do not rinse.
Apply N°3 Hair Perfector™ and comb through.
Leave on for 10 minutes. Rinse well.
Shampoo and condition with N°4 and N°5.
Use as a two-part system with N°3 once a week or 2-3x per week for very damaged hair.
Water (Aqua/Eau), Bis-Aminopropyl Diglycol Dimaleate, Phenoxyethanol, Sodium Benzoate.
This brand is excluded from most Ulta Beauty coupons.
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Best For
Hair Type
Most Helpful Positive Review
Great product, bad pump
I really do love this product combined with No. 3. Although it takes consistent use, I've noticed a big difference in my overly stressed hair. The reason for 4 stars and not 5 is the poor quality of the pump. It's not a sprayer pump, but is a streamer pump. I thought I had a defective pump on the fi...
Most Helpful Critical Review
The application is so difficult
Ideally would be easier to apply. The spray comes out in a jet similar to a cheap water gun, I get more on me and the bathroom walls than on my hair. I try to put it on my hands and rub it on but it runs away. I've wasted more than I've used! Please make it more of a mist spray which would be easier...
2419 results
Good product, awful sprayer
Verified Buyer
Reviewed at

Great product, but bad sprayer. It comes out in a stream, not a mist, so a lot misses my hair or goes straight to my scalp. So much got wasted during the first use that I finally put it in a different spray bottler. With so many people complaining about this feature I don't know why they haven't changed it yet.
Love the formula but please change the packaging
It does exactly what it says it should, but the spray nozzle is awful. Its a stream spray instead of a mist, so I end up just unscrewing the top and dumping out some into my hands. So please change it!
I had a sample of # 0 and 3, and couldn't believe the result
Hair Type Wavy Hair
Verified Buyer
After using my sample of 0 and 3 I knew I had to purchase them! My hair had so much more body than usual, even the second and third day after treatment and wash.
Can't tell if it does anything
I honestly cannot tell if this stuff does anything or not. I think the No. 3 is way more efwfctige rhan this one. Between that and the terrible spray nozzle design, I'm going to try the hair mask instead.
Change the nozzle
Verified Reviewer
Reviewed at

Nozzle sucks I don't understand why it has to spray like that, so much product is wasted.
Questions
Q&A
Showing 3 out of 3 Questions
- Q
Is this product color safe? I just got highlights on my dark hair a few days ago. Can I use this?
- Asked by MamaBear
- Official Answer By Olaplex - Brand EngageYes! Nº.0 is color-safe and can be used on highlighted or color-treated hair. It works by rebuilding hair bonds to help strengthen hair and is ideal for maintaining hair after chemical services.Was this answer helpful to you
- Q
How often can I, or should I, use?
- Asked by Michelle
- Official Answer By Olaplex - Brand EngageWe recommend using No.0 once a week for most hair types. For very damaged hair, it can be used up to 2–3 times per week as needed. Always follow with No.3 Hair Perfector for best results.Was this answer helpful to you
- Q
Do you have to use the number 3 after it for this to work? Or can i just get this and apply it before washing my hair and then use shampoo and conditioner by a different brand.
- Asked by Delila
- Official Answer By Olaplex - Brand EngageNo.0 is designed to be used with No.3 for the best results. No.0 acts as an intensive primer that boosts the performance of No.3, so using them together delivers the strongest bond-building benefits.Was this answer helpful to you