Use the following zoom and pan buttons to control the image that follows them
Tab through the images or use the previous or next buttons to navigate each product image
OLAPLEX N°.0.5 Scalp Longevity Serum Treatment
Offers
Use previous and next buttons to navigate the slides of the %1 Product Carousel
Yay! You are earning rewards points on this purchase.
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.
This brand is excluded from most Ulta Beauty coupons.
We think you'll like
12 items
Use previous and next buttons to navigate the slides of the We think you'll like Product Carousel
Sponsored products
12 items
Use previous and next buttons to navigate the slides of the Sponsored products Product Carousel
Questions
Ask a QuestionWhat do you want to know about this product?
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...
176 results
What a big difference this makes!!
After using Olaplex before, I had pretty high expectations, and this definitely did not disappoint! After having my son, I've noticed a loss of density and fullness throughout my hair, so I was grateful to get to try this item out. I used it almost daily, as a treatment and let it sit for about 10 minutes. Super quick and easy to use, and I could feel and see my hair strengthening and looking less sparse within 2-3 weeks! It didn't have much of a smell, nor does it leave any type of greasy or waxing feeling and buildup on your scalp. This has easily become one of my favorite and most cherished hair treatment products I've tried. I'm so thankful to get gotten to latest this is exchange for my honest review!
It soothed my scalp!
The Olaplex No.0.5 Scalp Longevity Treatment noticeably improved the health and hydration of my scalp. From the first use, I experienced immediate relief from dryness, flakiness, and itchiness—my scalp felt soothed, calm, and refreshed. The lightweight formula has a pleasant, subtle scent and isn't oily or greasy, which I really appreciated. I applied it after showering, and it instantly eased irritation without weighing my hair down. After each use, my scalp felt cleaner, more balanced, and far less sensitive. Over time, I noticed my hair also became softer, shinier, and looked visibly healthier at the roots. This treatment has become a must-have in my scalp care routine. Product was received as part of an educational promotion.

Instantly soothed my scalp
The Olaplex No.0.5 Scalp Longevity Treatment definitely gave me a healthier, more hydrated scalp. I noticed immediate relief from dryness, flakes, and itchiness, which made my scalp feel soothed and refreshed. The formula has a light, pleasant scent and isn't oily, which I really appreciated. I applied it after showering and loved how it instantly calmed my scalp without weighing my hair down. My scalp felt cleaner, more balanced, and less irritated after each use. It also left my hair feeling softer, shinier, and visibly healthier at the roots.

Hydrated Scalp
Everything about this scalp serum is high quality…starting with the bottle which can be used to part the hair into sections and easily dispenses the serum. I've been using the serum on clean, wet hair and mostly only use it around the crown of my head where I have experienced the most dryness. The instructions also say you can use it on dry hair as an overnight serum. I like that the serum absorbs quickly into my scalp and doesn't leave any greasy film like other serums I've tried. I have noticed fewer tiny white flakes from the dryness, but the biggest difference is just that my scalp feels and is visibly more hydrated. I can't speak to the anti aging benefits, but overall I've enjoyed it and will keep using it. This product was provided for promotional purposes in exchange for my feedback.
A new staple in my hair care routine!
The N°.0.5 Scalp Longevity Serum Treatment is a game changer for scalp health. After consistent use, I noticed significantly less dryness, flaking, and irritation. My scalp feels balanced, nourished, and healthier overall. The serum absorbs quickly without leaving a greasy residue, and the lightweight formula makes it easy to incorporate into my routine. It also has a subtle, refreshing scent that feels like a mini spa treatment every time I use it. I've even noticed less hair shedding and improved hair texture at the roots. This product has truly elevated my hair care regimen and given my scalp the attention it deserves. Highly recommend for anyone looking to support longterm scalp wellness! This product was provided for promotional purposes in exchange for my honest review.