All products featured on GQ are independently selected by GQ editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. In the late eighties, at ...

In the late eighties, at the height of maximalism, two-in-one formulas made their first appearance in Pert Plus, a dual shampoo-conditioner that got hair clean and kept it smooth. Nearly 40 years ...