Olaplex No.7 Bonding Hair Oil has the best record for color-treated hair: 16 of 16 shoppers said it left their hair softer and smoother without looking greasy. Paul Mitchell Super Skinny Serum, a smoothing serum counted with the oils, follows at 14 of 14, then Verb Ghost Weightless Hair Oil at 10 of 10 and OUAI Hair Oil at 7 of 8. Each record counts just shoppers who said they have color-treated hair, and all four rest on small groups.
Updated . How we count
Share of reviewers who stated an outcome for color-treated hair. Ranked by the lower bound of a 90% confidence interval, so a product needs both a good share and enough reports to rank high.
Best record Olaplex No.7 Bonding Hair Oil 16 of 16 say it left their color-treated hair softer and smoother without looking greasy See price & reviews on Amazon Praise and complaints are the points reviewers repeat most, shown as a share of each product's counted store reviews.
Olaplex
Of its 29 reviews, 10% say it works on curly hair and 10% on wavy hair. No complaint came up more than once.
No repeated complaints yet.
Paul Mitchell
Shoppers praise the scent in 12% of its 16 reviews and say a little goes far in 12%.
No repeated complaints yet.
Verb
A nice scent comes up in 27% of its 11 reviews, and 18% say it works on thick hair.
No repeated complaints yet.
OUAI
The scent wins praise in 50% of its 10 reviews, and 20% say it keeps fine hair light.
The 4 products ranked here carry 7,005 reviews at Ulta. We searched them for color-treated hair and read the newest matching reviews, up to 40 per product and store, posted between Aug 2018 and Oct 2026.
A review counts only when the reviewer used the product themselves. We drop reviews written in exchange for a free product or a sweepstakes entry (0 on this page), and products that are no longer sold.
Ulta also shows reviews first posted on brands' own websites. They run much more positive than store reviews of the same products (across 19 products with both, 76% of brand-site reviewers said the product solved the problem, against 55% of Ulta shoppers), so we show them on product cards but never count them.
Because we searched for the problem, people who had it are overrepresented. Compare products with each other rather than reading a share as your own odds.
Skin type, skin tone and age splits use what reviewers chose on Sephora's review form (and age on Ulta's when given). We only show a split when enough reviewers fall on each side.
Amazon buttons appear only on products that most reviewers here say fix the problem (at least 60%, with enough reviews to trust it). Everything else gets no buy link.
An AI model labels each review against a fixed list of points, and we spot-check the labels before publishing. We publish counts, never the reviews themselves.
Olaplex No.7 Bonding Hair Oil has the best record (16 of 16), followed by Paul Mitchell Super Skinny Serum (14 of 14), Verb Ghost Weightless Hair Oil (10 of 10) and OUAI Hair Oil (7 of 8). The first three show no misses, so their order comes from group size, with 16 shoppers behind the first, 14 behind the second and 10 behind the third.
It is a smoothing serum, and this page counts it with the oils. Shoppers with color-treated hair rated it the same way as the oils, on whether it left their hair softer and smoother without looking greasy.
Shoppers say a little goes far in 21% of the Olaplex No.7 Bonding Hair Oil reviews and 20% of the OUAI Hair Oil reviews. Start with a small amount and add more if you need it.
Olaplex No.7 Bonding Hair Oil, Paul Mitchell Super Skinny Serum and Verb Ghost Weightless Hair Oil are sold on Amazon by the brand or Amazon itself, and Olaplex No.7 Bonding Hair Oil is both the leader and the best pick sold on Amazon. OUAI Hair Oil is sold there through third-party sellers, so check who the seller is.
HiveTried earns a commission when you buy through the "See price & reviews on Amazon" buttons. It never changes the ranking: the order comes from buyer reports only, and a product gets an Amazon button only when buyers here say it works.