The 32 Best Hair Growth Shampoos of 2024, According to Experts

Rapunzel hair, coming right up.

collage of hair growth shampoos including Redken, Kerastase, Shea Moisture
(Image credit: Future)

When you desperately want longer hair, looking in the mirror can get discouraging and waiting can feel like an eternity. Thankfully, there are steps to speed up hair growth beyond using your favorite run-of-the-mill shampoos and conditioners, such as taking nourishing hair growth vitamins, trying hair growth oils, and incorporating one of the best hair growth shampoos into your wash day routine.

Hair growth products, including shampoos, nurture a healthy scalp that supports and stimulates hair growth. Not all products have a place in your lineup, however. Specific ingredients may be best suited to your hair type and concerns—and all these shampoos, conditioners, and oils are only part of the picture. Building all-around healthy habits can also contribute to growing longer, more luscious hair.

To get started, Marie Claire tapped several haircare experts for insight into the products they and their clients use for hair growth results. Whether you’re trying to grow out a short haircut, or you're dealing with hair loss, you’ll find the best hair growth shampoo for reaching the length of your dreams ahead. 

What To Look For, and Avoid, in a Hair Growth Shampoo

Board-certified dermatologist Dr. Jerry Shapiro recommends natural ingredients like vitamin B3 and castor oil. Furthermore, he encourages buyers to find formulas that incorporate caffeine and niacinamide. "Caffeine reverses the effects of dihydrotestosterone (DHT), the main hormone involved in hair loss. It is also known to increase blood circulation to the scalp and extend the anagen phase," he explains. "Niacinamide is a form of vitamin B3, an essential nutrient that supports many cellular processes. It also plays an essential role in preventing inflammation."

Meanwhile, fellow dermatologist Dr. Shani Francis recommends avoiding hair growth shampoos with harmful sulfates that can strip your hair of the natural and essential oils that it needs. Sulfate-free shampoos cleanse without lathering, so they're gentle on hair. Other ingredients to avoid? Parabens, silicones, and phthalates.

All three chemicals are commonly found in haircare products—and can send your hair growth journey in the wrong direction. "Parabens are preservatives that have been proven to mimic estrogen and disrupt the delicate hormonal balance," explains Dr. Shapiro. "Sulfates usually dry or irritate the scalp and skin. Methylisothiazolinone (MI) is a preservative to avoid bacterial growth, but is a potent allergen. Phthalates are hidden in fragrances, but they are endocrine disruptors."

Dr. Antonella Tosti, a Professor of Dermatology and Cutaneous Surgery at the University of Miami, also emphasizes the importance of taking care of one's scalp and hair follicles. She warns to steer clear of the preservative MCI/MI (Methylchloroisothiazolinone/Methylisothiazolinone), "which can cause scalp inflammation and hair loss." She also advises avoiding UV filters, including titanium dioxide nanoparticles and oxybenzone/benzophenone.

Can Shampoo Make Your Hair Grow?

Yes, the best hair growth shampoos can speed up your lengthening process. There are other practices you should consider adopting in pursuit of longer, healthier hair. Dr. Shani Francis, board-certified dermatologist and member of DevaCurl’s Expert Curl Council, says that supplementing a hair growth shampoo with a diet rich in omega-3s, fiber, sulfur ("our hair has a lot of sulfur in its internal structure"), and protein will really speed up the process. Foods like lean meats, leafy greens, nuts, beans, and fish fit the bill. 

Most importantly, make sure you drink a lot of water. Francis recommends two liters a day if you want to see results.

Best Hair Growth Shampoos for Straight Hair

Best Hair Growth Shampoos for Natural and Curly Hair

Best Hair Growth Shampoos for Thinning Hair

Best Hair Growth Shampoos for Scalp Health