The One Product You Should Switch To ASAP For Thinning Hair, According To A Dermatologist

TRY IT: Nioxin System 2 Cleanser Shampoo ($28) 

"Antioxidants such as vitamin E and ginseng are beneficial to promote hair growth because they reduce free radicals from sun, stress, or overprocessing and have anti-inflammatory properties," Dr. Sadick explains. 

He also lists botanicals as another important antioxidant-rich ingredient that should be featured in thinning hair shampoos for their role in stimulating blood flow and promoting hair growth.

If you're looking to strengthen your strands, Dr. Sadick says it's best to choose a shampoo that's fortified with hair-healthy proteins like amino acids and biotin. 

"Amino acids provide the building blocks to build new strands, while biotin, part of the B-vitamin complex, is required by hair to metabolize amino acids and can help strengthen hair," he continues. 

Good to know! Once you've found the right shampoo for your hair, Dr. Sadick suggests phasing out all hair care products that contain harmful ingredients to protect your strands. He urges those with thinning hair to avoid "products with dyes and preservatives, like parabens and synthetic fragrances" for their weakening and drying effect on hair.