Question: what is the best hair thickening product on the market?
Answer: Nexxus Diametress Shampoo: Best shampoo for making hair stronger and fuller. ... 
Aveda Thickening Tonic: Best blow-dry lotion. ... 
Bumble and Bumble Thickening Full Form Mousse: Best hair thickening mousse. ... 
Windle and Moodie Thickening Cream: Best thickening cream to volumise hair.