Best Dull Hair Products
Ranked by 4 mentions across Reddit · Updated November 2026
Reddit’s top pick for Dull Hair
Leave-In Molecular Repair Hair Mask
See alternativesThe why
Two sessions bring softer, shinier strands; one user also says it revived bleach-damaged hair.
Real Reddit threads about Dull Hair
“I'm not sure I'd spend $220 but the K18 mask was great for my hair when it was bleached.”
Positive
“stay away from k18 repair mask”
Cautionary
“K18 gives shine and sleekness and Olaplex gives fullness”
Positive
“K18 leave in mask… sorry girls but unfortunately this stuff IS worth £70.”
Positive
“Two small bottles of K18 later and you genuinely cannot even tell my hair is bleached.”
Positive
“I've narrowed it down to the pre shampoo oil treatment, occasional clarifying shampoo, and K18 making the biggest difference in my hair.”
Positive
“K18 (Once a month)”
Positive
“K18 leave in molecular repair hair mask. You’re supposed to shampoo, rinse, towel dry your hair, put this in for 4 mins, rinse and use conditioner”
Positive