Gray or white hair is an unfortunate part of aging, and occurs when the melanin pigment cells in hair follicles begin to fade. If you were a natural blonde before graying, or have always secretly dreamed of transforming into a blonde bombshell, there are products available that will completely cover your white hair at home. When you decide to dye your gray or white tresses blonde, make sure you choose the right product and shade for your complexion.

Choose a product formulated for 100 percent gray coverage that will complement your skin tone. A “permanent” hair color contains ammonia and other products that more effectively cover gray, so choose this instead of a package labeled “demi” or “semi” permanent. If your skin is naturally fair, choose a slightly deeper shade of blonde -- a platinum or very light blonde could wash you out. If your hair is longer, consider purchasing two boxes to ensure even coverage.

Slip on an old T-shirt and plastic or rubber gloves; a pair should come in the dye kit. Mix the blonde dye according to the package directions.

Apply the dye to your roots first. Begin at your hairline and work your way back. Avoid vigorously working the dye into your scalp. Instead, cover all your hair thoroughly. Leave a small amount in the bottle to fix any spots you missed.

Examine the front of your hair to ensure every inch is covered with dye. Grab a hand mirror and use it to examine the back. Apply dye to any sections you missed. Toss away any remaining dye, and set the timer according to the package directions.

Rinse out the hair dye under a lukewarm tap until the water runs clear. Apply the coloring kit's conditioner to your hair, paying attention to concentrate the product on the tips. Allow the conditioner to sit for 2 to 3 minutes before rinsing it out.