Best Thickening Shampoos

Nioxin Scalp + Hair Thickening System 2 Shampoo, For Natural Hair with Progressed Thinning, 33.8 fl oz (Packaging May Vary)

Nioxin System 4 Scalp + Hair Shampoo - Hair Thickening Shampoo For Damaged Hair with Progressed Thinning, 33.8 fl oz (Packaging May Vary)

OGX Thick & Full + Biotin & Collagen Shampoo & Conditioner Set, (packaging may vary), Purple, 13 Fl Oz (Pack of 2)

KÉRASTASE Densifique Densité Shampoo, Thickening & Strengthening Shampoo, Removes Build-Up & Adds Shine with Hyaluronic Acid for Fine, Thin & Thinning Hair, 8.5 Fl Oz

Tea Tree Lemon Sage Thickening Shampoo, Builds Body + Boosts Volume, For Fine Hair, 33.8 fl. oz.

Pantene Shampoo Twin Pack with Hair Treatment, Volumizing Shampoo for Volume & Body, Safe for Color-Treated Fine Hair, 27.7 Fl Oz Each, 2-Pack + Miracle Rescue Shot (0.5 Oz)

Nioxin Scalp + Hair Thickening System 1 Shampoo, For Natural Hair with Light Thinning, 33.8 fl oz (Packaging May Vary)

HASK BIOTIN BOOST Shampoo and Conditioner Set Thickening for all hair types, color safe, gluten-free, sulfate-free, paraben-free - 1 Shampoo and 1 Conditioner

Bumble and bumble. Thickening Volumizing Shampoo | For Instant Fullness | Moisturizing | Color Safe | Straight to Wavy, 8.5 Fl Oz

Paul Mitchell Extra-Body Shampoo, Thickens + Volumizes, For Fine Hair, 10.14 fl. oz.