Writing a satirical feature film about a hairstylist in the 1970s. In this film, he has a young assistant who is very passionate about her work, but is often ignored. I kinda wanted her to mention to him that one of the products they're using (maybe some sort of hairspray?) is actually detrimental to their clients' hair health. Any ideas?
I was about to suggest you go on YouTube and do a search for "1970s hair products." But that'd pretty well get you nothing but ads for products people would use at home. Salons use specialized shampoos, conditioners, dyes, etc., generally by certain big, long-established names. Which leads to the problem that if you use the actual name of a manufacturer, you're opening yourself to a boatload of legal trouble. You could make up a brand that the salon maybe uses because it's cheaper. Good candidates for hair harm would be permanent wave solutions, dyes, straighteners, and so on. Like, the solution has to be left on on X minutes to have the desired effect, but it starts burning the clients' hair at X-10 minutes. That said, a hairspray that's so gummy it can't be washed out would be funny. And a lot depends on how (in)competent you want the shop owner/lead hair stylist to be.