Bnatural, Gray Away and Style Edit are some reputable brands of black spray for covering gray hair. The sprays are temporary. Wash with shampoo to remove the product.
Each product is easy to apply and quick drying. Shake the product and then apply on dry hair, focusing on gray areas. Allow the product to dry for two or three minutes. The spray instantly makes grays less noticeable and extends the time between permanent hair color applications.
BNatural comes in six shades including True Black. Gray Away has three shades and the darkest is Black/Dark Brown. Style Edit has six shades including Black/Dark Brown.