Diy Lowlights For Gray Hair . If this is your first time low lighting your own hair, it’s best to start small and work. Gray lowlights on brown hair. Let the gray shine! Gray hair highlights, Long white hair, Long gray hair from www.pinterest.com Gray hair is already coarse, so it’s important to avoid making the hair shaft open up. Place foil underneath the hair to stop the colour from bleeding onto surrounding hair. With lowlights, you will want to keep the hair strands very thin (or at least thinner than you would when highlighting hair).