Unfortunately, the hair is often forgotten when it comes to protecting against pollutants. If exposed often to pollution, the hair can become dull, dry, and cause an itchy scalp. David Felstead, Head of the Hair and Scalp Clinic at Daniel Galvin explained that, "follicles sit below your scalp and your hair grows through them, so any build-up of pollution, excess oil, or dry skin flakes can potentially block this process," leading to possible thinning and damaged-looking hair. Felstead advises to never leave too big a gap between washes, and not to use too much dry shampoo as a substitute. Excessive use of dry shampoo creates a "residue on the hair and scalp, therefore attracting further pollution and dirt from the environment."
Image Source: Revlon / Kyle Galvin