Consumers are incorporating products such as glitter sprays and dry shampoo powders to add flair and extend the life of their hairstyles, according to New York City-based beauty trend tracker Spate. The popularity of glitter hair spray and dry shampoo powder should inspire brands to focus on producing and promoting unconventional and playful products. Glitter Hair Spray  Glitter hair spray can be used on every hair type to enhance the overall appearance of a hairstyle or add a touch of c...