Dry shampoo vs. traditional cleansing shampoo

Unlike traditional shampoos, dry shampoo is intended to be applied to hair without soap or water. As you work the powder into your scalp, it absorbs excess oil and sweat on your hair. Once dry, the powder can be brushed out, producing fresher and cleaner looking hair.

“There’s not really any research that shows that dry shampoo, by itself, causes hair loss. However, if you’re noticing signs of irritation, such as buildup or itchiness, I’d recommend washing with traditional shampoo at that point,” says Lauri Vargo, MD, Nebraska Medicine dermatologist.

How dry shampoo affects the hair and scalp

Although dry shampoo does not directly cause hair loss, using dry shampoo too often or for extended periods can cause scalp problems, such as:

• Irritation – Overuse can cause dry shampoo to accumulate on your hair follicles, which can cause irritation and inflammation that may accelerate hair shedding

• Dandruff and scaly skin – Since you aren't removing dead skin cells as frequently from the scalp, it may lead to dandruff and scaly skin, which can cause inflammation and irritation

Questionable ingredients in spray dry shampoo

Dry shampoos often contain fragrances, preservatives and surfactants that can cause allergic reactions, including contact dermatitis – an itchy rash caused by direct contact with a substance.

Additionally, several spray dry shampoos have been recalled for potentially containing high levels of benzene. This naturally occurring chemical can be harmful to humans. Experts say we’re exposed to benzene every day in the air we breathe, especially when we fill our vehicles at the gas station. Benzene is also in certain detergents, glues and paints. Nevertheless, it’s best to follow these recalls and avoid personal care products that potentially contain high levels of benzene.

“At the end of the day, it’s up to each patient and what works best for their lifestyle, but it’s also important to be intentional about the products you’re using,” says Dr. Vargo. “If you find that you’re experiencing hair loss, thinning or other complicatons, it’s best to seek professional treatment, ideally from a dermatologist.”

The Nebraska Medicine dermatologists are highly trained in diagnosing and treating the most complex dermatologic conditions. For more information or to schedule an appointment, call 800.922.0000.