Dry shampoo isn’t for everyone. Generally speaking, people with dry or curly hair should probably avoid using it. These hair textures look better when excess scalp oils are allowed to maintain optimum moisture levels in the hair. Instead, dry shampoo is better for use on very straight or slightly wavy hair that tends to look greasy or stringy within 24 hours of washing with a normal shampoo. However, if you need to wash your hair every day to look fresh and clean, then a dry shampoo product might be a great option.