Ah, the 1970s; when we could lay in the sun basted in baby oil, and not have a care in the world. The sun wasn’t something to be fearful of back then, SPF? WHAT on earth was that? The goal was to get your tan as dark as you could, even if it involved a bad sunburn along the way.
Of course, you had to have your hair as light as you possibly could to complete that beachy look. The OG sun lightener was Sun-In, made by Toni & Sun. All you had to do was spray on Sun-In under the sun, and see what happens. They had two formulas, Regular: for light brown as well as blonde, and Super: for darker brown or hard-to-lighten hair. The end game of all this spraying and sunning was to have all the boys flock to you in the summertime, naturally!