Is Dry Shampoo Bad for Your Scalp and Hair?
Whether we oversleep or start our workout late, we all have days when we go out without washing our hair.
Now comes our love for dry shampoo. Although its popularity has recently skyrocketed, it has been around since Victorian times. People have always wanted a quick way to keep their hair looking great. Here’s what you need to know about dry shampoo.
What is dry shampoo?
Dry shampoo is usually a spray or powder that absorbs excess oil, dirt, and grease to make your hair look cleaner. Dry shampoo is usually starch or alcohol based and does not contain water. It is not a true shampoo and it does not clean your hair. 1
Benefits of Dry Shampoo
Dry shampoo is so popular because it works. It saves time and allows you to quickly revitalize your hair during the day. But the benefits don’t stop there.
With dry shampoo, you can go without washing your hair every day and still look fresh. Your scalp and hair need the natural oils they produce, and washing your hair every day can strip away these oils, leaving your hair and scalp feeling tight and dry. Dry shampoo can help you go a day or two without washing your hair, preserving enough natural oils to keep your hair and scalp healthy. 6
Dry shampoo can add volume and texture to your hair, especially if your hair is thin and fine. Using dry shampoo instead of hairspray can help your hair hold its shape longer. 6
Dry shampoo ensures that the effects of hair care last longer. Whether you want to extend the effects of your blow-dry for a few days without washing it, or just to prevent your hair from being washed out, dry shampoo can help you keep your salon-ready look longer. Tinted dry shampoo can even be used to hide hair growth between coloring sessions. 6
Potential Risks of Using Dry Shampoo
Dry shampoo isn’t always all sunshine, flowers, and beautiful days. It’s important to know how to use it properly.
If you use dry shampoo in moderation and follow the instructions, you shouldn’t take any risks, but there are some things you should be aware of.
Not only is dry shampoo not a cleanser, it can also leave a residue on your hair and scalp. When this residue builds up, it can cause an itchy scalp or clogged pores or breakouts. 1
Clogged pores are a breeding ground for bacteria and yeast, which can lead to a scalp condition called seborrheic dermatitis, or a red, flaky scalp. Dandruff is not caused by dry shampooing, but rather by a lack of washing that causes the scalp to be too oily, which results in dandruff. 2
Infections affect the hair follicles, causing red, painful bumps where the follicles invade the scalp, a condition called folliculitis. Excessive use of dry shampoo can also cause the follicles to become dry and brittle. This can lead to hair breakage and hair loss. 2
In 2022, the Food and Drug Association found excessive levels of benzene, a carcinogen, in multiple brands of dry shampoo and called for a voluntary recall of the affected products. If you have dry shampoo purchased before 2023, you should throw it away. Look for the words “benzene-free” on the label, and avoid ingredients like butane, isobutane, or propane. 11
How dry shampoo affects different hair types
Since everyone’s hair is different, it’s important to care for your hair with products that are designed for your hair type.
Normal hair:
Normal hair is hair that has not been dyed, permed, straightened or chemically treated, and is not overly greasy or dry. Most dry shampoos keep normal hair in good condition between washes. 8
Oily hair:
Your body normally produces the oils your hair needs. If that’s more than you want it to feel like, we have good news. Dry shampoo is best for your hair and will allow you to go an extra day or two between washes. 8
Dry or damaged hair:
If your scalp and hair often feel tight or look dry, or if you typically perm, straighten or use harsh styling products or procedures to achieve your desired look, use dry shampoo with caution. Most dry shampoos contain ingredients that dry out your hair further, leaving your follicles weak and your hair breakage prone. You should wash your hair properly at least three times a week. 8
How to use dry shampoo safely
Follow these tips to get the best dry shampooing results while keeping your scalp or hair healthy. 1,2
Shake the product well before use and apply only to your hair, not your scalp.
Hold the spray at least 15cm from your head for even distribution.
Apply only to areas where oil is most noticeable – usually the temples or crown of the head.
Use your fingers to smooth the dry shampoo throughout your hair.
Be careful when styling with a straightener or curling iron. Heat combined with dry shampoo can damage your hair.
Do not use dry shampoo for more than two days in a row and no more than twice a week.
If your hair is dark, use a tinted product to prevent discoloration.
If your hair feels dry, stiff or grainy, you may have used too much product.
Tips for curly hair: Curly-haired people should apply the product to the base of the hair shaft and blend it in with your fingers. Do not comb your hair or apply dry shampoo directly to your curls. Instead, apply dry shampoo evenly and treat your curls with a smoothing or moisturizing oil to make them look luscious. 8
Expert Opinion
Dermatologists recommend following these tips for safe and effective use of dry shampoo. 4
It works best on fine, long hair that becomes frizzy after washing.
Be careful with homemade dry shampoos that contain cornstarch, which can breed bacteria and cause unpleasant odors.
Check ingredients before use to avoid allergic reactions. If your scalp feels tight or dry after using dry shampoo, choose a fragrance-free product.
Use only a small amount where needed. You can add more if needed.
Use the night before or before a workout so the product has time to absorb as much oil and dirt as possible.
Wash your hair regularly with water and shampoo to prevent infection, eliminate odor, and keep your hair in its best condition.
Stop use if you experience burning, itching, or irritation on your scalp. If the sensation doesn’t stop after shampooing, contact your dermatologist.
Avoid use if you have sensitive skin, dandruff, seborrheic dermatitis, eczema, psoriasis, or other scalp conditions.
If you use prescription topical medications on your scalp, consult your dermatologist before using dry shampoo.
Dry shampoo is a great tool when you need it, but like any good tool, you’ll get the best results if you use it in moderation.
