The 13 Best Shampoos To Treat a Dry Scalp

A dry scalp “is caused by a loss of the natural oils that moisturize the scalp. This can occur for a myriad of reasons,” explains Dr. Rodney. She says factors may include a change in your environment (maybe the weather), stress, aging, over-washing, contact dermatitis (a reaction to a product), or a skin condition like eczema or psoriasis. Cohen notes the scalp is often dryer during the winter, so opting for hydrating, nourishing products during the colder months is always a good idea.

Dr. Frey explains a dry scalp is often attributed to seborrheic dermatitis, aka our worst enemy: dandruff. Dandruff is basically caused by a yeast called malassezia that occurs on the scalp and eats up the healthy oils, leaving you with a dry scalp and lots of flakes.

Dr. Rodney says there are some precautions we can take to ensure our scalps stay hydrated and healthy. She recommends drinking lots of water, managing your stress levels, avoiding harsh hair products, using a humidifier to add some moisture back into your environment, and if irritation persists or something seems abnormal, see a dermatologist.

Cohen recommends opting for something gentle and avoiding harsh sulfates which strip your hair of oils and shine. “Most shampoos in this country use a detergent-based surfactant system like sulfates or PEGs,” she says. “This type of cleansing system is what you see in 90s shampoo commercials—excessive lather and that squeaky clean feel. I know it can make you feel super clean, but it’s over-stripping your scalp of all the good, healthy oils in the process. I recommend a naturally-derived surfactant system for cleansing.”

Dr. Frey recommends looking for a shampoo with zinc pyrithione, which helps to stop dandruff in its tracks and remove excess flaking. Dr. Rodney likes formulas with salicylic acid, which “promotes cell turnover, reducing flaking and redness.” Salicylic acid and other exfoliants like glycolic acid can help to remove buildup on the scalp so you can start fresh. Rodney also recommends avocado oil, argan oil, aloe vera, pantothenic acid, and oatmeal to provide a boost of hydration.

“It’s important to keep the scalp hydrated and nourished—like a garden, you want to take care of the soil to keep the environment thriving,” says Cohen. She recommends opting for a hyaluronic acid scalp serum for added moisture and trying out peppermint or tea tree oil for a dry, itchy scalp. Simply apply the oil to your scalp like a spot treatment to help with irritation.