The 14 Best Hair Thickening Shampoos For Men, According to Doctors

First, consider your scalp and hair type, advises Dr. Kash. “If you tend to have a dry scalp or dry, brittle hair, avoid harsh ingredients like alcohols that can further dry out hair as well as strong surfactants like sulfates.” Instead, look for gentle shampoos with moisturizing ingredients. On the other hand, “those with oily scalps and hair may actually need shampoos with more cleansing properties.” Basically, choose a shampoo that’s been designed for your specific hair type to take out the guesswork. Dr. Kash also advises considering how frequently you wash your hair (if you wash frequently, choose a gentler shampoo) and your hair texture.

Most importantly, keep in mind that not very shampoo is going to work for everyone, says Dr. Doshi, so finding the right thickening shampoo may take some trial and error. Keep at it for a while until you decide, though, because “it can take a while before any noticeable improvement occur.” And finally, if you’re dealing with “substantial hair loss or thinning,” seek the guidance of a medical professional.