In my 23 years behind the chair and 26 in the industry, I’ve seen these mistakes hundreds of times… And listen—this is a judgment-free zone . We’ve all done at least one of these. (Some of us have done all five… in the same week… during a full moon.) The good news? Most hair mistakes are totally fixable with a few simple tweaks. These small changes can make your color last longer, your hair feel healthier, and your style look more “fresh-from-the-salon” between appointments.