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Highlights
Summary
This moisturizing leave-in 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
- Instantly hydrate, soften, and detangle
- Immediately seal split ends
- Continuously repair and protect
Research Results
- Revives hair health leaving it softer, hydrated, and healthier-looking
- 12x more moisture after one use*
- Up to 88% split-end sealing after one use*
- Reduces breakage by 81%*
- Heat protection up to 450°F/232°C
- Vegan. Color-safe.
- *As tested in a clinical facility using curly tresses.
Key Ingredients
- HIGH-ADHESION SEALING COMPLEX: Immediately and continuously mends split ends.
- HYDRAMINO REPLENISHING BLEND: Provides hydration, conditioning, detangling, and shine.
- FUTURE DAMAGE SHIELD: Helps repair and prevent damage from styling and heat up to 450°F.
- OLAPLEX BOND BUILDING TECHNOLOGY™: Re-links the disulfide bonds that give hair its strength and structure.
Item 2660572
- Apply 1-2 pumps to clean, damp hair. Add more as needed. 2. Follow with your preferred stylers. Fine Hair: Begin with 1 pump. Medium to Coarse Hair: Begin with 2 pumps.
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.
Ingredients are subject to change. For the most current ingredient list, please consult the product packaging of the item you received
This brand is excluded from most Ulta Beauty coupons.
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Reviews
Review 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...
426 results
Love her!
Hair Type Wavy Hair
I've tried a lot of leave-ins over the years, and most of them either sit on top of my hair or make it feel weighed down. This one surprised me. My hair tends to get dry and frizzy easily, especially after brushing it out, and you can see that in the first photo…not cute. After using the Olaplex No.5 Leave-In, my hair honestly felt hydrated. The texture completely changed (way softer), way smoother, and the definition came back without. I didn't expect it to make that much of a difference, but it really did. What I love most is how it sinks in without leaving a film or greasy feeling. It helped my curls form better and made detangling way easier. It's rare I find something that gives moisture and feels lightweight at the same time, but this did both. She's that girl!


Love herrr
Hair Type Wavy Hair
I've tried a lot of leave-ins over the years, and most of them either sit on top of my hair or make it feel weighed down. This one surprised me. My hair tends to get dry and frizzy easily, especially after brushing it out, and you can see that in the first photo…not cute. After using the Olaplex No.5 Leave-In, my hair honestly felt hydrated. The texture completely changed (way softer), way smoother, and the definition came back without. I didn't expect it to make that much of a difference, but it really did. What I love most is how it sinks in without leaving a film or greasy feeling. It helped my curls form better and made detangling way easier. It's rare I find something that gives moisture and feels lightweight at the same time, but this did both. She's that girl!


Pretty effective
Hair Type Wavy Hair
I love Olaplex. They've been the top of the line in haircare for years! They've always been quite pricey and I honestly didn't know why until I started using their products. Now, I LOVE a leave-in treatment. But there are so many now that it's difficult to decide which to go with. So, when all else fails, I go with the name I know. And let me tell you... this is worth it! I have bleached hair that's coarse and gets super dry. Especially after using purple shampoo. Between that and processing damage, it's nearly impossible to keep my hair moisturized and healthy. Since I started using this treatment, I haven't seen a single strand that had breakage or split ends. My hair is ultra soft and shiny. It reacts better to heat styling without the subsequent damage. It even revived my waves! Is it the best i've used? Not in the short run. And considering the price, I'd probably only buy this as protection specifically for right after bleaching. However, i do think it could be a great everyday product. This product was provided for promotional purposes in exchange for my honest review

I liked it, soft and not heavy at all
Hair Type Straight Hair
Me gustó mucho este acondicionador sin lavado, es como una crema para peinar, no es para nada pesado, deja el cabello muy suave y tiene un olor fresco y costoso. Tiene protector de calor que es increíble para terminar nuestro peinado. Lo recomendaría. ((Este producto se proporcionó con fines promocionales a cambio de mi revisión honesta))


Hair Benefits
Hair Type Wavy Hair
My experience with the OLAPLEX No.5L Moisturize & Mend Leave-In Conditioner have truly been thrilling! My hair feels incredibly nourished and revitalized, making it easier to manage and style. I am extremely happy with the results. From the very first use, I was amazed at how soft and healthy my hair felt. Even my damaged platinum bleached blonde hair looks incredible, with a natural shine that isn't overly glossy. The texture is simply divine, and I can't get enough of the delightful scent! What I appreciate most is the versatility of this product. I don't need to use the entire Olaplex line to achieve fantastic results; I can pair it with my favorite shampoo and conditioner, and still enjoy the benefits. On top of that, I like to add a bit of hair oil for an extra boost, and the outcome is nothing short of fabulous. I genuinely believe that this product is worth every penny. While it might seem a bit pricey at first, a little goes a long way, making it an affordable option in the long run. The quality is exceptional, and I can confidently recommend it to anyone looking to improve the health and appearance of their hair—whether it's damaged or already in great shape. I knew Olaplex had a good reputation, but I had no idea how transformative this product would be for my hair. It's incredibly easy to apply—just a simple step in my post-wash routine—and the results are consistently outstanding. Whether I let my hair air dry or use a blow dryer, it always looks amazing. I will continue to support the Olaplex brand and share my positive experience with friends, family, and anyone in need of a great hair product. Thank you for creating such an incredible product! This product was provided for promotional purposes in exchange for my honest review.


Questions
Q&A
Showing 5 out of 13 Questions
- Q
How long will 3.3 oz last
- Asked by jo
- Official Answer By Olaplex - Brand EngageOur 3.3 oz No.5L Leave-In Conditioner is designed to be used sparingly, starting with 1 pump for fine hair or 2 pumps for medium to coarse hair. How long the bottle lasts will vary based on your hair length, thickness, and frequency of use.Was this answer helpful to you
- Q
Is is good for short dry gray hair
- Asked by Gmom
- Official Answer By Olaplex - Brand EngageYes! Nº.5L can be used on all hair types and is a great option for adding hydration, softness, and manageability to dry hair.Was this answer helpful to you
- Q
Is it safe for colored hair?
- Asked by Michelle
- Official Answer By Olaplex - Brand EngageYes! No.5L is safe for color-treated hair and is designed to help hydrate, soften, and protect damaged or dry strands without stripping color.Was this answer helpful to you
- 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