Olaplex No.3 Dupes: 6 Cheaper Alternatives That Work

L'Oreal's EverPure Sulfate-Free Bond Repair Pre-Shampoo Treatment is the name that comes up first in almost every mass-market 'Olaplex dupe' list, and the reason is simple: it occupies the exact same routine step. You apply it to dry or towel-dried hair before shampooing, the same way you'd use Olaplex No.3, and it carries the same before-and-after bond-repair claims on the bottle.

The chemistry isn't the same. Target's own ingredient list for the 5.1 fl oz US bottle shows a citric-acid-based formula built on cetearyl alcohol, glycerin, behentrimonium chloride, citric acid, sodium citrate and cetyl esters, not Olaplex's patented bis-aminopropyl diglycol dimaleate crosslinker. That single difference is why some longtime Olaplex users describe it as noticeably weaker, even while others are happy alternating it in on non-treatment wash days.

At $9.99 for 5.1 fl oz, it costs about $1.96 per ounce against Olaplex's $9.09, so the price gap is large enough to matter even if the results gap is real for some hair types. One r/Hypothyroidism commenter who'd tried several dupes called it 'pretty good,' just not as strong as the original. In the UK, the same line sells as Elvive Bond Repair Pre-Shampoo Treatment at £16.99 for 200 ml, a different bottle size than the US version, so don't assume the per-ounce math carries over directly. It's also stocked at Walmart in the US and at Boots in the UK, though we couldn't confirm live product pages for either retailer this pass.

Redken's Acidic Bonding Concentrate is the pick that comes up most often when people who've actually used Olaplex compare notes online. Reddit's r/HaircareScience repeatedly names it alongside Olaplex No.3 and K18 as the three bond-repair products people actually build routines around, and one r/Ipsy commenter called it flatly 'way better than Olaplex No 3.' It sits in the same pre-shampoo slot, at the same $30 US price point, from a salon brand with real pedigree.

Redken's Bonding Care Complex, though, works at roughly 7 percent concentration to seal the cuticle and reset hair's pH, a citric-acid approach rather than Olaplex's disulfide-bond crosslinker. The two get grouped together because they're marketed in the same 'bond repair' category, not because they share an active ingredient.

Sizing is the genuine uncertainty here. We could not reach Ulta or Redken.com to confirm the current US bottle size, and the UK listing on LookFantastic shows a 190 ml bottle at £27.00 RRP, a size that doesn't line up with the 150 ml figure commonly quoted for the US market. Until a live US product page can be checked directly, treat that US size as unconfirmed rather than settled. One r/FancyFollicles user also reported it left her hair drier than Olaplex did, so results aren't universally better, whatever that Ipsy thread claims.

Bond Bar is Sally Beauty's own house line of pre-shampoo bonding treatments, built around a numbered range that echoes Olaplex's No.1 through No.6 system. It's also the single most-repeated name in this entire research pass: at least six separate Reddit threads across r/Wavyhair, r/FancyFollicles, r/Hair and r/Ipsy independently bring it up as the cheap in-store Olaplex swap, more than any other product covered here, and yet almost no mainstream dupe roundup mentions it.

We confirmed Bond Bar is a real, currently listed Sally Beauty brand: it shows up across three separate links in the retailer's own site navigation, plus a dedicated 'bondbar-regimen' page. What we could not confirm is anything about a specific bottle. Sally's site sits behind bot protection that blocked every attempt to reach an actual product page, so the price Redditors keep repeating, around $9.99 a bottle, and the ingredient list are still unverified rather than confirmed.

One purchaser described buying the whole Bond Bar line for about $9.99 per bottle and called the results 'stellar,' saying she preferred Bond Bar's No.6 to Olaplex's own equivalent. That's a real, repeated claim rather than an invented one, but it stays a community report until a retailer page confirms it. If you're near a Sally Beauty store, it's worth a look in person; just don't expect an exact price or ingredient match until someone checks a live product page.

Revolution Haircare built its 'Plex' range to deliberately echo Olaplex's own numbering, with Plex 3 sitting where No.3 does and Plex 5 where No.5 does, and UK tabloid dupe roundups have leaned on that naming for years. At £15.00 for a 250 ml bottle, it undercuts Olaplex by a wide margin, and it's sold at Boots and Superdrug without any of Olaplex's salon-adjacent positioning.

Revolution describes Plex 3's actual formula as a plant-protein 'triple molecular weight protein cascade,' not a disulfide-bond crosslinker, so the naming similarity does more work than the chemistry does. Results are mixed even among people who like the range: one Redditor said it 'did wonders' for a friend's fine, dyed hair but 'did nothing' for her own fine hair, concluding that results simply vary by person.

There's a bigger problem than the formula mismatch. We paged Revolution's entire current product catalog directly from the brand's own site, all 681 SKUs, and found no product containing 'Plex' or any bond-repair term in the title; the site's own search tool returned zero results for 'Plex 3' as well. That lines up with Reddit reports that the line already vanished from US Target, and it's a real red flag that this specific product may no longer be in production. Confirm it's actually on shelves at Boots or Superdrug before going looking for it.

K18's Leave-In Molecular Repair Hair Mask is the product every 'Olaplex dupe' roundup eventually mentions, even though it isn't cheaper and doesn't work the same way. Cosmopolitan frames the choice by damage severity: for light repair, stick with Olaplex, and for serious damage, K18 is the better bet in its coverage. Reddit's r/HaircareScience puts it in the same 'big three' bracket as Olaplex and Redken's Acidic Bonding Concentrate.

The price tells the real story. A 50 ml bottle runs $75, which works out to about $44 per fluid ounce against Olaplex's roughly $9, confirmed directly on K18's own site alongside the 15 ml ($29) and 100 ml ($120) sizes. That's not a discount option; it's a premium one. The mechanism differs as well, a patented biomimetic peptide called K18PEPTIDE rather than Olaplex's disulfide-bond crosslinker, and so does the use case: K18 goes on after shampoo, with no conditioner needed afterward, while No.3 goes on before you've even shampooed.

One r/Sephora commenter who likes K18's ease of use compared with Olaplex's multi-step routine still stopped short of calling it a swap, saying the two are simply used too differently to compare directly. Treat K18 as what to reach for once classic bond-relinking has stopped being enough, not as a way to spend less.

Eva NYC's Therapy Session Deep Conditioning Hair Mask shows up on some dupe lists for an odd reason: an ingredient-matching tool called SkinSort scored it at 56 percent ingredient overlap with Olaplex No.3, the highest of anything checked in this research. That sounds impressive until you look at which ingredients are actually shared, cetearyl alcohol, behentrimonium chloride, dimethicone and hydrolyzed protein, all generic conditioning agents that show up in dozens of unrelated products rather than Olaplex's bond-building active.

There isn't one. This is a rinse-out deep conditioner, not a pre-shampoo bond treatment, so it solves a different problem at a different point in the wash. At 13.5 fl oz, it's genuinely cheap per ounce, and if what you actually want is softness and manageability rather than bond repair, it will do that job fine.

The price needs a caveat, too. This size turns up quoted at $18.99 in some roundups, but Target's own current listing for the product tops out at $15.99 across the sizes that store carries, so the 13.5 fl oz figure may reflect a different retailer or simply be stale. Confirm it at checkout. Either way, don't buy this expecting it to replicate what Olaplex No.3 does; it's a conditioner filling a different job, not a bond-repair swap.