Olaplex No. 5 Conditioner
Top PickWhat We Like
- Bond-building formula aimed at breakage
- Thick and concentrated; a dime-sized amount covers a lot
- Leaves hair soft and shiny while it strengthens
Worth Noting
- Small bottle at a premium price
- Protein-forward formula suits rotation, not every wash
- Size
- 8.82 oz
- Formula
- Bond-building, anti-breakage
- Key Ingredients
- Panthenol and glycerin
Most conditioners are built to smooth what damage leaves behind; this one is built around the bonds inside the hair. The brand's claims are unusually specific — repair of everyday damage in a single wash, twice the strength at a molecular level, 60 percent less breakage — and they describe a product doing repair work rather than coating the cuticle. Panthenol and glycerin handle the moisture side.
That dual job is why it's our top pick for damaged hair. Hair that's been bleached, heat-styled, or over-processed usually needs both: water drawn back in and structure reinforced underneath. The formula is thick, and the label puts a 250 mL bottle at up to 50 applications, so a dime-sized squeeze covers mid-lengths and ends once you've worked it through.
The bottle is small next to some here — the Nexxus holds nearly four times as much for about half the money, though it's a different product for a different job. At this price you'll want to measure rather than pour. The formula also leans on protein, which is right for breakage and wrong for hair that's brittle from dryness alone.
The way we use it is in rotation: this one every other wash, a moisture-led conditioner in between, which keeps the strengthening without the stiffness. The fragrance is the other divider — noticeable, and not universally loved.
Bottom line: For hair that's breaking rather than simply dry, this is the conditioner we point you to first: it works on damage at the bond level, and a dime-sized amount is enough.