We invented the 2 in 1 to make great hair for men less complicated. Why take time out of your day to use both shampoo and conditioner when you don’t have to? With Pert you can get ready faster and your hair will feel clean smell fresh and look healthy in just one step. Pert offers six different options to meet your specific hair type or need. So How Does Pert Work? Pert uses a patented 2 in1 formula. During the lathering phase the shampoo collects dirt and oil while the conditioner works on your hair to form a protective seal to provide strength shine and protection against damage.