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Key Benefits
Powerful Results
*Based on a consumer perception study of 75 participants.
Powerful Results
*Based on a 16-week dermatologist-supervised clinical test of 25 participants following usage described on label
Powerful Results
*Based on a 16-week dermatologist-supervised clinical test of 25 participants following usage described on label
Powerful Results
*Based on a consumer perception study of 75 participants.
4WK
to visibly healthy, softer hair*
5X
more hydrated scalp immediately*
51%
improved scalp barrier in 14 days*
80%
said scalp felt nourished after just one use*
Watch It In Action
Recommended Routine
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Take the QuizCommon Questions
No, Nº.0.5 Scalp Longevity Treatment is a leave-in treatment, so there is no need to rinse after application.
Nº.0.5 Scalp Longevity Treatment is developed for all hair and scalp types.
For best results, use Nº.0.5 Scalp Longevity Treatment three times a week. It is also gentle enough for daily use.
Nº.0.5 Scalp Longevity Treatment offers both immediate and longer term results. After the first use, expect a soothed, more hydrated scalp. After 4 weeks, start looking for visibly healthier, softer hair. Nº.0.5 Scalp Longevity Treatment is for all scalp types and results will vary.
Yes, Nº.0.5 Scalp Longevity Treatment's lightweight formula absorbs quickly with no residue left behind, so it is the perfect first step before applying styling and heat protection products.
Consult your physician prior to using Nº.0.5 Scalp Longevity Treatment with an OTC or prescription scalp medication.
Psoriasis is a medical condition. While Nº.0.5 Scalp Longevity Treatment is tested to be safe and effective, we recommend consulting a dermatologist prior to using if you have a medical condition.
Nº.0.5 Scalp Longevity Treatment can be used before styling wet hair or as an overnight treatment when hair is dry.
The skin on the scalp has a naturally lower barrier function and slower cell turnover than the skin on the face and body. This means it is more susceptible to accelerated aging from factors such as sun, poor water quality, irritants, chemical treatments, hair products, stress, lack of sleep, and an imbalanced diet. A study showed that the skin on the scalp actually ages six times faster than the skin on the face.
Reviews
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1 to 8 of 319 Reviews
1 – 8 of 319 Reviews
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5 out of 5 stars.
Cannot Live Without This!
5 days ago
Olaplex No.0.5 Scalp Longevity Treatment is an absolute game-changer for scalp health! I’ve been using it consistently, and the difference is incredible. My scalp feels so much more balanced, hydrated, and refreshed, without any greasy residue. I’ve struggled with dryness, itchiness, and occasional buildup, but since incorporating this into my routine, those issues have significantly improved. It absorbs quickly, feels lightweight, and gives my scalp a soothing, almost cooling sensation.
One of the biggest changes I’ve noticed is less shedding and healthier hair growth. My roots feel stronger, and my scalp stays cleaner for longer, which means I can go longer between washes. I also love that it’s made with clean ingredients—no harsh chemicals, just powerful, effective scalp care. It’s easy to use and doesn’t weigh my hair down, making it perfect for all hair types.
If you’ve been struggling with dryness, flakes, or an irritated scalp, I highly recommend giving this a try! It truly resets and nourishes your scalp, creating the perfect foundation for healthy hair. Olaplex has done it again with another amazing product! Will definitely be keeping this in my routine long-term. 🙌
Did this product help address any of the following hair concerns:Dullness / Lack of Shine, Frizz, Excessive Oil
Would you descibe your hair as:Dry
Yes, I recommend this product.
Helpful?
5 out of 5 stars.
Love it!
17 days ago
I think it’s a great addition to my haircare routine. I have naturally curly hair, and I straighten it before curling to get a more polished look. Because of my styling routine and product use, I tend to get a lot of buildup on my scalp, so I was really hoping this would help.
The application is super easy—the nozzle makes it simple to target the scalp without making a mess. It feels lightweight and absorbs quickly without leaving any residue or greasiness, which I appreciate. I noticed that my scalp feels much more balanced since using this, and I experience less of that heavy, clogged feeling I usually get after a few days of styling products.
Helpful?
5 out of 5 stars.
Weightless!
21 days ago
I love this product as it keeps my hair and scalp incredibly healthy and it’s truly weightless. I haven’t had an issue or anything with itchy or dry scalp and I highly recommend it!
Did this product help address any of the following hair concerns:Dullness / Lack of Shine, Breakage / Weakness / Visible Damage, Dryness
Would you descibe your hair as:Weak and Damaged
Yes, I recommend this product.
Helpful?
5 out of 5 stars.
Great product
23 days ago
I love it on my hair it does wonders I always love my freebie samples but it doesn’t always look good and it just looks like it has to do something about the texture and the hair and it doesn’t have a good color and it looks really nice on me I love the color I love the hair I just want it so much and I’m gonna try to do something different for you I just don’t know how I feel I don’t want it anymore but I’m just trying I just want you know I don’t know how much to give it I just wanna be able and you can give you know how to make a good time to get to me I don’t want you to know how much you can get you can get it I don’t want you to get you to be a good night and I’ll talk later I don’t want you to me I just don’t know what I don’t want you to
Would you descibe your hair as:Dry
Yes, I recommend this product.
Helpful?
5 out of 5 stars.
Powerful product!
23 days ago
Before trying this product I had a very dry, oily scalp. Basically, it was a mess. I'm trying to grow my hair out, so a happy scalp is kind of a non-negotiable and I did NOT have that.
First off: It's super easy to use. The applicator is super great, it does a great job of dispensing just the right mount of product. Just a few drops, massage it in, and you're good. I've been doing it after I wash my hair, but sometimes I'll throw some on when it's dry too, it works great both ways.
After using, my scalp feels way less itchy and my hair feels way softer too, which is a bonus.
Basically: If your scalp is throwing a fit, this stuff is worth a shot. It's like a spa day for your head. My scalp is finally chilling out, and that's all I really care about. Plus, who doesn't want healthier hair?
This product was provided for promotional purposes in exchange for my honest review.
Did this product help address any of the following hair concerns:Dullness / Lack of Shine, Dryness
Would you descibe your hair as:Oily
Yes, I recommend this product.
Helpful?
5 out of 5 stars.
First product to work for my scalp
23 days ago
The OLAPLEX No.0.5 Scalp Longevity Treatment is designed to keep your scalp balanced, healthy, and free from buildup. If you’re dealing with dryness, oiliness, or irritation, this treatment works to create the ideal environment for stronger, healthier hair growth. It has a lightweight, fast-absorbing formula that doesn’t leave behind any greasy residue. Instead, it nourishes your scalp with a blend of key ingredients that support scalp longevity while protecting against oxidative stress and environmental damage. If you’ve ever felt like your hair products focus too much on the strands and not enough on the root of the issue—literally—this treatment helps bridge that gap. Application is easy: section your dry or damp hair, apply directly to your scalp, and massage it in. There’s no need to rinse, making it a hassle-free addition to your routine. Over time, you might notice less flaking, better hydration, and an overall improvement in how your hair feels at the roots. If you’re a fan of the OLAPLEX system, this is a great addition to help maintain a healthy foundation for hair growth while keeping your scalp feeling fresh and balanced.
Did this product help address any of the following hair concerns:Dullness / Lack of Shine, Frizz, Breakage / Weakness / Visible Damage, Excessive Oil, Dryness
Would you descibe your hair as:Dull / Lacking shine
Yes, I recommend this product.
Helpful?
5 out of 5 stars.
OLAPLEX. Nº.0.5 SCALP LONGEVITY TREATMENT
23 days ago
I was pleasantly surprised by the OLAPLEX No.0.5 Scalp Longevity Treatment! My hair is long, porous, and dyed black, while my scalp is sensitive and prone to itchiness and dandruff. The formula is lightweight and easy to apply, distributing evenly without weighing down my hair. After just a few uses, I noticed a significant reduction in itchiness, and my scalp felt much calmer and more balanced. My hair at the roots also appears healthier and more refreshed. Another great bonus is the subtle yet pleasant scent, which makes the experience even better. Unlike some other scalp treatments, this one doesn’t leave any greasy or sticky residue, making it perfect for regular use. If you struggle with a sensitive, irritated scalp but still want a product that nourishes your hair, this is definitely worth trying. Highly recommend!
This product was provided for promotional purposes in exchange for my honest review.
Did this product help address any of the following hair concerns:Dullness / Lack of Shine, Excessive Oil, Dryness
Would you descibe your hair as:Oily
Yes, I recommend this product.
Helpful?
5 out of 5 stars.
Moisturizes and strenghthens for a healthier scalp
23 days ago
I have been using OLAPLEX No. 0.5 Scalp for almost two weeks now and am still loving the results. This scalp treatment starts at the root of the problem and begins strengthening and nourishing the scalp which in return creates healthier hair. I have used this product in both ways as described. I put on my scalp as a hair mask before bed and I also use after I get out of the shower on wet hair. I believe both methods are useful for creating a protective barrier on the scalp and moisturize hair from the scalp on. I highly recommend for anyone that wants a little extra nourishment on their head. Product was received as part of an educational promotion.
Did this product help address any of the following hair concerns:Dullness / Lack of Shine, Breakage / Weakness / Visible Damage
Would you descibe your hair as:Thinning
Yes, I recommend this product.
Helpful?
