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OLAPLEX N°.0.5 Scalp Longevity Serum Treatment
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Highlights
Summary
OLAPLEX N°.0.5 Scalp Longevity Serum Treatment is a weightless scalp serum that targets visible scalp aging, strengthens the scalp barrier, and immediately hydrates to support softer, healthy-looking hair.
Benefits
- Immediately hydrates and soothes scalp
- Strengthens and protects scalp barrier and microbiome
- Promotes soft, shiny and visibly healthy hair
- Hydrating and Anti-aging
Key Ingredients
- Proprietary Scalp Barrier-Building Complex Patented OLAPLEX Bond Building Technology™ re-links disulfide bonds within keratin to strengthen the Stratum Corneum–the scalp barrier. Plus, a blend of essential fatty acids and ceramides provides nourishing lipid replenishment to hydrate a dry scalp.
- Antioxidant-Rich Blend Of Lavender Extract & Tazman Pepper extract Helps protect against damaging free radicals and accelerated scalp aging caused by stressors like sun, poor water quality, irritants, chemical treatments, hair products, stress, lack of sleep, and an imbalanced diet.
- Biome Pro-Balancing Blend Balances the microbiome and reinforces the scalp barrier to maintain a healthy scalp environment, which helps protect hair health.
Research Results
- Visibly healthy, softer hair after 4 weeks*
- 5X more hydrated scalp immediately**
- 51% improved scalp barrier in 14 days**
- 80% said scalp felt nourished after just one use*
- *Based on a consumer perception study of 75 participants after 28 days of use.
- **Based on a 16-week dermatologist-supervised clinical test of 25 participants following usage described on label
Item 2641617
- Part hair with needlenose applicator. Squeeze gently and apply directly to scalp.
- Continue for as many sections as needed. OLAPLEX Pros suggest 3-4 sections on the crown and back of head.
- Massage thoroughly into scalp to ensure proper absorption. Use before styling wet hair or as an overnight treatment when hair is dry. For best results, use three times a week. Gentle enough for daily use.
Aqua/Water/Eau, Glycerin, Propanediol, C9-12 Alkane, Octyldodecanol, Bis-Aminopropyl Diglycol Dimaleate, Phenoxyethanol, Sodium Acrylates Copolymer, Oryza Sativa (Rice) Bran Oil, Arginine, Chlorphenesin, Glycine Soja (Soybean) Seed Extract, Hydrogenated Polydecene, Lecithin, Coco-Caprylate/Caprate, Citric Acid, Menthoxypropanediol, 1,2-Hexanediol, Ceramide NP, Cetearyl Alcohol, Glyceryl Stearate, Tasmannia Lanceolata Leaf Extract, Phenethyl Alcohol, Pogostemon Cablin Leaf/Stem Extract, Lavandula Angustifolia (Lavender) Flower/Leaf/Stem Extract, Lavandula Oil/Extract, Pentylene Glycol, Leptospermum Scoparium Branch/Leaf Oil, Ceramide AP, Cholesterol, Hydrogenated Lecithin, Phytosphingosine, Stearic Acid, Magnolia Officinalis Bark Extract, Piper Nigrum (Pepper) Seed Extract, Tetraacetylphytosphingosine, Sodium Acetylated Hyaluronate, Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Xanthan Gum, Hydrolyzed Sodium Hyaluronate, Ceramide EOP, Sodium Benzoate, Ethylhexylglycerin, Glycosphingolipids.
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Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Hair Type
Most Helpful Positive Review
89/100
Before I tried this product, I viewed Olaplex as a brand for people who were born with good hair and just went to the salon to drop a few c-notes to get a touch up. I'm not one of those people. With hair, I am very low maintenance, preferring to wet it and forget it (antithetical to Olaplex in my ...
Most Helpful Critical Review
Not for me
I really wanted this scalp treatment to be a win, especially since I usually love Olaplex' products. Their shampoo and conditioner have been staples in my routine for a while, so I had high expectations going into this. Unfortunately, it didn't quite deliver on what I needed it for. To start with th...
180 results
Refreshes scalp!
I've been using this scalp treatment for a few weeks now and can already feel a difference! My scalp was somehow both dry and oily (even after washing) and I'm noticing an improvement in my scalp's health. Not flaky and overall, more clear. In terms of applying it, I've used it both on my dry hair before bed as well as damp hair. It feels cool when applying and the applicator makes it easy to apply. I can't tell if it's helping yet with hair growth but I'm hopeful it will as I continue to use it more! If you have a dry or sensitive scalp, this is worth trying! This product was provided for promotional purposes in exchange for my honest review.
I absolutely love this product
I've been using the Olaplex Nº.0.5 Scalp Longevity Serum Treatment for a couple of weeks now, and I'm genuinely impressed. The serum is incredibly lightweight and absorbs quickly without leaving any residue. My scalp feels more hydrated and less irritated, especially around my hairline where I usually get dryness. After consistent use, my hair looks shinier and healthier overall, and I've noticed less buildup at the roots. This is a great addition to any routine if you're trying to improve your scalp care and support long-term hair health. Disclaimer: This product was provided for promotional purposes in exchange for my honest review.
Helped get rid of my oily dandruff
This product has made my scalp feel amazing and has done wonders for my oily dandruff. It has become my new go-to. After using it 2–3 times a week for the past couple of weeks, my scalp has never felt better. It feels renewed and more balanced. My hair also feels healthier and looks shinier. I love that this mask can be used either as a pre-treatment before showering or as an overnight mask for added exfoliation. The first night I used it, I applied it as an overnight mask, and my scalp felt so much fresher the next morning after showering. My dandruff was basically gone—which is something I've really struggled to get rid of. Usually, it shows up right after showering, but it has significantly decreased with this treatment from Olaplex! I highly recommend this treatment for anyone with dandruff, an irritated scalp, or anyone just looking for a scalp reset and refresh. This product was provided for promotional purposes in exchange for my honest review.
I will definitely continue using this product
Olaplex has definitely come up with a game changer. This scalp treatment has worked wonders on my dry flaky scalp. I'm no longer dealing with the unbearable itchiness. I've only been using this for about a month I can only imagine how great my scalp will look and feel in a few more months.
I'd buy this again and again
The OLAPLEX Nº.0.5 Scalp Longevity Treatment is an innovative product that focuses on scalp health, which is essential for strong and beautiful hair. Its lightweight, fast-absorbing formula nourishes, balances, and hydrates the scalp without leaving any greasy residue. After consistent use, I noticed significantly less dryness, irritation, and flakiness. My hair also looks fuller, healthier, and more vibrant since the scalp is better cared for. This treatment strengthens the scalp barrier and supports long-term hair resilience. Perfect for anyone looking to improve their scalp and hair from the root up — truly a game-changer!