The Telltale Sign That You Colored Your Hair at Home

Dyeing your hair at home is a cost-saving measure for many. But like any beauty procedure performed by nonprofessionals, the degree to which you can pass off a self-job as the work of an expert is a source of anxiety. We wanted to know if there's one thing that enables professional hairstylists to spot a DIY dye job from a mile away—so we went straight to the source. Is there a dead giveaway that someone skipped the salon? Ahead, four top celebrity colorists tell us the answer. Keep scrolling to see what they have to say!