(8) 8 product ratings - L'Oreal Excellenece Permanent Color HiColor HiLights for Dark Hair 1.2oz Red. If utilizing the Loreal HiColor HiLights dye within the red color it'll brighten the crimson. You can protect it with a plastic covering or foil while you color the rest of your hair. Since you have used bleach already the high color might be a bit to harsh on your bleached hair. See more ideas about Loreal hicolor red, Loreal hicolor, Red hair. $8.30. HOURS OF OPERATION: October through the end of May: 9:00am – 8:00pm EST Monday through Friday. My hair came out exactly the way I wanted. NEW HiColor RED HiLights by L'Oreal Excellence is the first highlighting series formulated for dark hair. I was worried it would shock my hair that has never been bleached so each time (once every 4 weeks) I left the dye on for 30-40 minutes. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading.