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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
Write A REVIEWReview 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...
172 results
Not my Dream Product
As a frequent Olaplex user (#3 mostly), I was disapponted in how effective the scalp serum was. I'm not new to scalp serums, as I use one pretty often. I can confidently say that this product was disapointing and I would not repurchase. I already have a dry, itchy scalp with some flakes (no dandruff), and this made my scalp worse. There was an increase in the flakes, as I experienced very little hydration. To make it worse, the smell is terrible. Truly cannot describe it. On the plus side, I love the applicator, and wish my other serums had similar ones. It claims to be lightweight, and that is true. This product was provided for promotional purposes in exchange for my honest review.
Love Olaplex
I've been using the Olaplex Scalp Advanced Serum as part of my post-wash routine, and I have to say—I'm loving the way my hair and scalp feel after using it. I apply it right after towel-drying my hair, just before blow-drying, and the results have been noticeably positive. What I appreciate most is how lightweight the formula is—it doesn't weigh down my roots or leave any greasy residue, which is a must for someone like me who likes a clean, fresh feel after a wash. My scalp feels soothed and refreshed, and my hair feels healthier and more balanced from root to tip. It's not always easy to find scalp-focused products that actually make a difference without being too harsh or too heavy, but this one strikes the perfect balance
I would buy this product again
I have used this product as a gift and also as a purchase I will repurchase this product over and over again it works and ur hair in the end is very soft and non frizz it left my scalp feeling clean and fresh all at same time making me look like supermodel hair
Soothing, Hydrating & Promotes Growth But the Scent Isn't
Hair Type Very Curly Hair
I love how soothing this feels on my scalp! My scalp used to feel tight and dry, but this serum hydrates it instantly and leaves it feeling calm and refreshed. In just two weeks, I noticed my hair grew an extra inch, and I even saw new growth on my bald spots which honestly blew me away. It's lightweight, non-greasy, and makes my hair feel soft and healthy. I appreciate the bond-building and microbiome-balancing ingredients, it truly feels like scalp care, not just another hair serum. I would've given it 5 stars, but the smell can really be off-putting. Also, the bottle is quite small for the price. Still, it's a very good product overall and definitely worth trying if you struggle with dryness, itchiness, or scalp thinning. 💯 PS: This product was provided for promotional purposes in exchange for my honest review
Scalp Relief!
Hair Type Straight Hair
I have been using the scalp longevity treatment Olaplex no. 0.5 on both wet and dry hair, and I am impressed with the effect. The applicator is very convenient to use, so I just spread the treatment on my scalp by massaging it in. And it gives a pleasant cooling sensation. I have experienced occasional irritation from bleaching my hair, and this serum helped me a lot. It immediately hydrates the scalp and promotes softer, healthy-looking hair. This treatment does not make your hair greasy, so I am very happy with the result. I would recommend it to everyone! **This product was provided for promotional purposes in exchange for my honest review.

