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Highlights
Summary
No.5L Leave-in Conditioner provides instant results and continuous repair and protection from cortex to cuticle. No.5LEAVE-IN immediately seals split ends and promotes visibly healthier hair after one use. Go beyond hydration with OLAPLEX Bond Building Technology and High-Adhesion Sealing Complex.
Benefits
- Immediately seals split ends
- Moisture-rich gel-creme hydrates dry hair
- Continuously repairs and prevents styling damage
- 450°F/232°C heat protection
Key Ingredients
- Patented OLAPLEX Bond Technology® Strengthens hair and repairs damage on a molecular level by rebuilding the disulfide bonds that give hair its strength.
- High-Adhesion Sealing Complex Works instantly and over time to bind to split ends and fill in gaps in the hair cuticle to smooth, seal, and continuously mend compromised ends.
- Hydramino Replenishing Blend A blend of Amino Acids, Squalane, Ximenia Oil, Panthenol, and Glycerin that replenishes moisturizing lipids, weightlessly conditions, detangles, and adds shine without leaving a film on strands.
Research Results
- Up to 88% split-end sealing after one use*
- 12x more moisture after one use*
- 81% reduction in breakage after one use*
- 450°F/232°C heat protection
Item 2633869
Apply to clean, damp hair. Fine Hair: Begin with 1 pump. Medium to Coarse Hair: Begin with 2 pumps.
Add more as needed.
Follow with desired stylers.
Can be used on dry ends between washes to seal ends.
Water/Aqua/Eau, Cetearyl Alcohol, Astrocaryum Murumuru Seed Butter, Propanediol, Behentrimonium Chloride, Glycerin, Cetyl Alcohol, Isoamyl Laurate, Squalane, Bis-Aminopropyl Diglycol Dimaleate, Brassicyl Valinate Esylate, Cetyl Esters, Pentylene Glycol, Phenethyl Benzoate, Brassica Campestris/Aleurites Fordi Oil Copolymer, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Caprylic/Capric Triglyceride, Cetrimonium Chloride, Caesalpinia Spinosa Gum, Fructooligosaccharides, Beta Vulgaris (Beet) Root Extract, Sodium PCA, Hydroxypropyl Starch Phosphate, Guar Hydroxypropyltrimonium Chloride, Sodium Lactate, Hydrogenated Ethylhexyl Olivate, Calcium Gluconate, Argania Spinosa Kernel Oil, Caprylyl Glycol, Cocos Nucifera (Coconut) Oil, Panthenol, Arginine, Ethylhexylglycerin, Oryza Sativa (Rice) Bran Extract, Sodium Phytate, Aspartic Acid, Potassium Lactate, Ximenia Americana Seed Oil, PCA, Hydrogenated Olive Oil Unsaponifiables, Butylene Glycol, Lactic Acid, Raphanus Sativus (Radish) Seed Extract, Octyldodecyl Oleate, Octyldodecanol, Helianthus Annuus (Sunflower) Extract, Propylene Glycol, Glycine, Citric Acid, Alanine, Algin, Coco-Glucoside, Sorbitan Oleate, Serine, Tocopherol, Rosmarinus Officinalis (Rosemary) Leaf Extract, Valine, Carrageenan, Chitosan, Xanthan Gum, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Magnolia Officinalis Bark Extract, Betula Alba Bark Extract, Crambe Maritima Extract, Ulmus Fulva Bark Extract, Caesalpinia Spinosa Fruit Extract, Sodium Hyaluronate, Hydrolyzed Ceratonia Siliqua Seed Extract, Zea Mays (Corn) Starch, Helianthus Annuus (Sunflower) Sprout Extract, Polyquaternium-7, Sodium Hydroxide, Phenoxyethanol, Sodium Benzoate, Potassium Sorbate, Fragrance (Parfum), Hexyl Cinnamal, Limonene, Citral, Linalool, Citronellol.
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Questions
Ask a QuestionQ&A
Showing 5 out of 10 Questions
- Q
Do you apply this from the roots or mid-length to ends?
- Asked by Abby
- Official Answer By Olaplex - Brand EngageApply to clean, damp hair, focusing on mid-lengths to ends. If needed, you can lightly apply to roots, but use sparingly to avoid weighing hair down.Was this answer helpful to you
- Q
Can this be used on colored hair? I have s vivid color. Thanks in advance just want to be using the correct products
- Asked by SavyGillis
- Official Answer By Olaplex - Brand EngageYes, this is safe for color-treated and vivid hair. It helps maintain hydration and supports stronger-looking, healthier hair without affecting your color.Was this answer helpful to you
- Q
Can you leave in as a replacement for mousse? Or apply mousse or gel afterwards?
- Asked by Lely
- Official Answer By Olaplex - Brand EngageNo.5L is a leave-in treatment designed to hydrate, smooth, and prep the hair. It does not provide hold like a mousse or gel, so you can layer your preferred styling product on top for added hold and definition.Was this answer helpful to you
- Q
What's the difference between this one and the no5 bond smoother?
- Asked by materialgirl
- Official Answer By Olaplex - Brand EngageOlaplex No. 5L is a standard conditioner you rinse out in the shower for daily hydration, while the No. 6 Bond Smoother is a leave-in styling cream used on damp hair to kill frizz. Essentially, use No. 5L to detangle and No. 6 to style and smooth!Was this answer helpful to you
- Q
Is it a heat protectant as well? Or I must apply another product on top of Olapex 5 to style with hot tools?
- Asked by AR
- Official Answer By Olaplex - Brand EngageNo.5L provides lightweight hydration and strengthening benefits but is not designed to replace a dedicated heat protectant. For heat styling, we recommend pairing it with a product like Nº.9 Bond Protector Nourishing Hair Serum for added heat protection.Was this answer helpful to you
Reviews
Write A REVIEWReview Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
I would buy this product again!
When it comes to hair care, finding the perfect product for wavy and curly hair can feel like discovering a rare gem. If you've been on the hunt for a leave-in conditioner that hydrates, smooths frizz, and leaves your curls looking and feeling their best, the Olaplex No. 5 Moisturize and Mend Leave-...
Most Helpful Critical Review
It's ok but there's better ones out there.
I had high hopes for this leave-in conditioner, especially with all the promises of multi-level repair, hydration, and split-end mending. And while it does deliver on a few things, I'm honestly left feeling a little underwhelmed for the price and hype. First, the good: It definitely made my hair fe...
384 results
LOVED THE RESULTS
Hair Type Very Curly Hair
Prior to using Olaplex No.5 Leave In Moisturize & Mend Leave-In Conditioner my hair was dried out and obviously heat damaged. In addition, split ends and breakage are current hair issues for me. I tried the conditioner for a length of time . There was noted visible changes . The changes to my hair were in several areas. My hair was not dull , it appeared healthier and more manageable . I did also note that the previous frizziness was controlled . In regards to the split ends, my hair began to bond and the split ends are markedly improving. This product is definitely one I would continue to use moving forward. The texture of the conditioner is smooth not greasy.It was easy to apply.There was no heavy residue or dried flakes of conditioner left in my hair . The conditioner has a light rosemary scent which was a plus! I also like the packaging being easy and convenient. This product was provided for promotional purposes in exchange for my honest review. I recommend and love the Leave-In Conditioner, Olaplex!


10/10 recommend
Hair Type Straight Hair
Definitely try this product for yourself!! you won't regret it. I love this product. I saw a little bit of growth after consistently using it. my hair became softer and it looked and felt more thicker than usual. the pump on the product is something easy to use and so handy. it comes out fast though so be prepared. the product itself absorbs pretty quickly in your hair as well which i love. this is a promo for my honest review.


So good!
I love this Olaplex No.5 Leave-In™ Moisturize & Mend Leave-In Conditioner! For reference, I have long hair that has been bleached numerous times over the last few years. I need all the moisture I can get for my hair to keep it healthy from all the bleaching I do. I love how easy this product is to use. You just apply it through the hair after showering, and it immediately starts working. I like to divide my hair into three sections when applying products like this so I can make sure it's distributed evenly. After applying, I immediately noticed how soft and supple my hair felt. You definitely get the conditioning benefits right off the bat. I'm excited to keep using this and see if it continues to help repair my damaged hair. You only need a small amount, and the bottle is fairly large so I expect this to last me at least 4-5 months. Overall, I think this is a solid option for those with damaged hair, wether it be from heat damage or chemical damage.
Restore My Damaged, Split End
Hair Type Wavy Hair
I been using Olaplex No. 5 Leave-In for a few weeks now, and I can confidently say it's been a game changer for my damaged hair. My ends were dry, brittle, and split from heat styling and years of coloring, and this leave-in has helped me get back on track to healthy, softer hair. What I really love is that it's more than just a conditioner, its packed with Bond Building Technology, plus ingredients like jojoba seed oil, green tea extract, and niacinamide, which all work together to strengthen, hydrate, and protect. I apply it after I shower while my hair is still damp, focusing mostly on my mid-lengths and ends, and it instantly makes my hair feel smoother and easier to detangle. I've noticed my hair looks shinier, feels stronger, and my split ends are less noticeable.If I had one complaint, it's the scent. It's not a bad smell at all, it's fresh and salon-like but to me, it's just a bit too strong. I personally prefer fragrance-free products, so I wish they offered a lighter or unscented version.This product was provided for promotional purposes in exchange for my honest review.


Not for me
I have long straight hair. I was applying No 6 and my hair looked healthy and shiny but when I sow this new product, I decide to tru it, and this product made my hair look super dry and with a lot of freez. I had to return it and go back with No 6