Question: what is the best shampoo to thicken hair?
Answer: Rahua Voluminous Shampoo. ...  Julien Farel Haircare Hydrate Shampoo. ...  Alterna Bamboo Volume Abundant Volume Shampoo. ...  Nick Chavez Plump 'N Thick Thickening Shampoo. ...  Briogeo Blossom & Bloom Ginseng Biotin Volumizing Shampoo.