The 15 Best Thickening Shampoos That Add Instant Fullness and Volume

If you’ve ever lusted for fuller hair, you’re not alone. Stylists and experts are inundated with questions about how to get thicker hair, especially with the increase in hair loss since the pandemic (22 percent of women reported hair loss after having COVID). While hair growth can be a lengthy process, it really starts in the shower with the best hair products.

“Thickening shampoos give instant gratification by making the hair appear feel thicker and fuller,” says Bumble and Bumble stylist Blake Novick. “To give instantaneous results, these formulas use ingredients that swell the hair shaft for a short-term, voluminous look.”

Bringing limp, flat hair back to life is all in the ingredients of the shampoos. “Keratin, which is the protein in hair, is something fine hair lacks and desperately needs to look fuller,” says hairstylist and Nexxus ambassador Clariss Rubenstein. “It also prevents breakage which is much more common in fine and thin hair.” Similarly, treating the hair with biotin will help with shine and fullness–plus, it contributes to hair growth. And just like you use collagen to help with elasticity of the skin, the ingredient works the same in haircare to help with the strengthen and minimize breakage.

While one shampoo won’t give you fuller hair in the long run, these 15 thickening shampoos will give the illusion of thick, voluptuous hair right away.