If you’ve ever gone from blonde to dark & back again (& again), you already know the damage can be brutal. K18’s leave-in molecular repair hair mask has literally saved my hair. No breakage, no dry ends, just strong, shiny, healthy strands that feel like I never touched a bleach bottle. I use it religiously & always keep a backup because it’s that good. k18 hair mask - leave in hair treatment - bond repair hair product - best products for damaged hair - blonde hair care - hair repair for bleached hair - k18 leave in mask - molecular repair treatment - k18 review - healthy hair products - post bleach hair care - k18 sephora find - best leave in treatment - hair breakage repair - color treated hair must have LTKU LTKBeauty