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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 2633869
- 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...
424 results
Effective
The Olaplex Leave-In Conditioner is the perfect addition to any hair care routine. My hair tends to be frizzy and dry. When I began to incorporate this leave-in conditioner, I noticed how much more manageable my hair was. The brush through was easier and softer. My hair maintained shine and softness longer in between washes. The texture is creamy but absorbs well through each strand. I truly enjoyed using the product after i showered and washed my hair. The leave-in does exactly what it claims to do.
A great product
I've been using the Olaplex Leave-In Conditioner and I really like how it makes my hair feel! My hair is usually pretty dry, especially on the ends, so I always look for something that can make it softer and easier to manage. This leave-in conditioner makes my hair feel smooth, soft, and more hydrated without making it heavy or greasy. I also love that it helps with detangling. After washing my hair, I just apply a small amount to damp hair, mostly on the lengths and ends, and then brush it through. My hair feels much easier to comb and looks more polished after styling. The texture is lightweight and a little goes a long way, so I don't need to use a lot. I also like how my hair looks after drying — it has more shine and feels healthier. Overall, I think this is a great product if your hair needs extra moisture, softness, and protection. Definitely something I'll keep using in my haircare routine!

Works perfect for my hair
I've been using the No.5 Travel Size Leave-In Conditioner and I really like it! My hair feels softer, smoother, and much easier to brush through after using it. I also love that the travel size is perfect to keep in my bag or take with me when I'm traveling. It doesn't feel too heavy or greasy on my hair, and it leaves my hair feeling fresh and manageable. Definitely a product I would use again!

Good leave in conditioner
I like this leave in conditioner, I don't necessarily think it works miracles and repairs your hair but I did notice it made my hair softer and smoother. I applied it on damp hair after my shower and it did feel softer compared to when I use normal conditioner. I would recommend giving it a try! It's a good size bottle. Received as part of a promotion.

Love this for the most part
I do love the Olaplex No. 5L Moisturize & Mend Leave-In Conditioner, however, I have used others that are extremely cheap that did work better and smelled better. This one doesn't necessarily stink, it just doesn't have a smell to it and I am all about my products having a good smell to them. I love for my hair to smell good. It does make my hair a little bit softer but I still have some problem areas that weren't taken care of by this product. However, I do have natural curly hair and it brought out my curls in an amazing way and for that, I love this product. I have a few strands that are just stick straight but with this product, it curls every strand! I do recommend this product to anyone that needs a little bit of hydration put back into their hair. This review was done in exchange for an educational promotion.
Questions
Q&A
Showing 5 out of 12 Questions
- 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
- 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