Pantene Pro-V Thick and Full Shampoo. Nexxus Diametress Luscious Hair Thickening Shampoo and Sublime Volume Luscious Bodifying Conditioner, Bumble and Bumble Thickening Shampoo, and Samy Fat Hair "0" Calories Thickening Shampoo and Conditioner are popular hair thickening products. These products help hair appear thicker while cleansing and conditioning the hair.
Styling products that add thickness include Nioxin DiaMax Advanced Serum, Alterna Caviar Clinical Daily Densifying Foam, and Philip B. Russian Amber Imperial Insta-Thick Hair Thickening & Finishing Spray, according to Harper's Bazaar. Suave Professionals Volumizing Root Boost Spray, Pantene Pro-V Fine Hair Solutions Weightless Body Building Gel, Pantene Pro-V Fine Hair Solutions Root Lifter Spray Gel, Paul Mitchell Thicken Up, and Kenra Volume Spray 25 are also popular products which add volume to hair.