Skunk stripes, hot roots -- if you're a novice home hair colourist, you're at risk, especially if you're using an applicator bottle to apply your dye. But there's good news: that weirdly patchy, bleachy-at-the-roots effect is easy to avoid. All you need is this video tip from Luis Pacheco, Clairol consulting colourist and owner of Hair on the Avenue in Toronto.
Note: it's not just about keeping your dye a respectful distance from your scalp. (Secondary hot-zone tip: the warmth from your head can intensify colour results nearest your roots.)
Such a simple chemistry thing, but key. Please spread the news to help others avoid a DIY colour oopsie.
Whether Debra Messing and Angie Harmon (#Iwanttobeheranyway) are examples of hot roots or root-touch-up mishaps is debatable, but you get the idea. Don't let it happen to you, ’k?
UPDATE Celebrity hair stylist Charles Baker Strahan (he's worked with Mariah Carey, Kathy Griffin, and Leighton Meester) spotted Debra Messing's photo in this post and weighed in with the following info and advice: "Almost all over-the-counter colors use 20 vol developer. If you are covering minimal gray and using hair colour with the same tonal quality you should be fine. If you have advanced gray and are trying to match color from a salon you will find trouble like Debra Messing in this photo."
For the scoop on home hair colour today -- fool-proof technology, formulas, conditioning ingredients -- download the August 15th print edition of The Kit for my story, "The Bathroom-Sink Salon."
Photo of Debra Messing in 2007 by Evan Agostini/Getty Images. Photo of Angie Harmon in 2010 by Jason Merritt/Getty Images.