I got a full highlight prior to a road trip to Texas and then on to Las Vegas. On the way, we stopped at a hotel in Arizona and I went for a swim. Fifteen minutes later in their pool, my hair turned lime green. I stopped at a salon to fix it and $75 later I still had green hair. I bought two packets of Swimmers Wellness Treatment (gave myself a "Malibu Treatment") and all was right as rain again! No more green hair!