The Thickening Shampoo by Viviscal is a must-have product for anyone looking to strengthen and thicken their hair. Viviscal, the reviewer, highly recommends this shampoo as part of their shower routine. They also mention using the strengthening conditioner alongside it. According to Viviscal, these products have had a significant impact on their hair growth. The reviewer is impressed with the results and mentions that their hair has grown significantly since using these products. Additionally, they highlight the pleasant scent of the shampoo. Overall, the Thickening Shampoo by Viviscal seems to be a reliable choice for those seeking to improve the thickness and strength of their hair.