Nizoral A-D Anti-Dandruff Shampoo and Head and Shoulders Old Spice 2-in-1 Shampoo and Conditioner are two of the best shampoo for hair thickening. They are both affordable and easy to find. They both have a clean, refreshing scent. They are both gentle and effective.

Nizoral A-D Anti-Dandruff Shampoo is the better choice for those who are looking for a shampoo that will thickening their hair. It is also good for those who have dandruff or an oily scalp. It is gentle and does not strip the hair of its natural oils. It is also affordable and easy to find.

Head and Shoulders Old Spice 2-in-1 Shampoo and Conditioner is the better choice for those who are looking for a shampoo that will thickening their hair and also condition it. It is also good for those who have dandruff or an oily scalp. It is affordable and easy to find.