A protein enriched color enhancing shampoo. Brightens white and gray hair. This shampoo does not give gray hair a blue tint. With continued use this shampoo alleviates brown and yellow tones to hair, leaving gray hair bright. Additional Product Information: We are not associated or affiliated with Nairobi and are not a licensed retailer of Nairobi. Nairobi guarantees this product only when sold through authorized retailers, and cannot guarantee the authenticity of any product sold by an unauthorized retailer. We cannot guarantee that this product is covered by any manufacturer s warranties or eligible for any manufacturer s rebate. If the UPC cod.