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Olaplex No. 0.5 is a weightless leave-in scalp serum in a 1.7 oz tube. It hydrates and soothes the scalp, supports the scalp barrier and microbiome, and is meant to counter scalp aging that can affect hair health. It is fragrance-light in feel and free of parabens, sulfates and phthalates, and it is vegan and cruelty-free. It suits people with dry, sensitive or flaky scalps and color-treated or damaged hair who want a scalp step before styling. Unlike Olaplex's bond-building washes and treatments, it targets the scalp rather than the strand, so it complements the No. 3 and No. 4 line rather than replacing it.
In stockSold by Maison RougeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Lowest price we've seen: $14.25 on Nov 13 at eBay. Tracked across 21 stores since Nov 13.
Owners describe a lightweight serum that calms tight, dry scalps and leaves hair soft without weighing it down. Many pair it with Olaplex shampoo and No. 3 as a pre-wash scalp step. A few say the tube is small for daily use and that results take weeks.
0.5 Scalp Longevity Treatment is a leave-in scalp serum that balances and strengthens the scalp. It is made to protect hair health against accelerated scalp aging, since the scalp ages faster than other skin and can affect the hair.
The lightweight formula hydrates and soothes the scalp right away. It strengthens and protects the scalp barrier and microbiome, and it promotes soft, shiny, visibly healthy hair. It is for all scalp and hair types, and it is dermatologist tested and trichologist approved.
