Blending away gray hair is best done by various forms of highlighting, especially for blondes. Adding several shades of color through highlighting lets gray hair mix in naturally with the added blond streaks. For those with dark hair, choosing a salt-and-pepper look achieved by careful highlighting is one of the best ways to let gray hair look natural without having the gray take over completely.
According to Daily Makeover, highlighting is far preferable to single-process hair coloring when trying to blend gray hair. With single-process coloring, touch-ups are needed as often as every two weeks, and inconsistent coverage can make hair look artificial and unattractive. Highlighting allows one to touch up the look every eight to 10 weeks. Since not every hair is covered with color when highlighting, some gray hairs are allowed to remain and blend naturally with the three or four other colors added to the hair. As gray roots grow in, they are less noticeable.
In addition to highlights, which are typically applied by painting individual strands of hair, then wrapping them in foil, lowlights can be added to hair to make color more natural. With lowlights, the hair's natural color is added in as one of the highlighting choices. Usually this darkens the hair a bit and allows for greater blending of any gray hair.
For those with dark hair and uneven gray patches, coloring to create a salt-and-pepper look may be the best choice. Strategic highlighting to add both streaks of gray and the hair's original dark color can add a dash of silver to the hair that looks natural and attractive. This type of highlighting looks best when performed at a salon.