Q&A: If anyone has tried salicylic acid in a shampoo how much did you use and do you think it made your product better?

In the August Q&A, Allison asked: I’ve noticed that salicylic acid is an ingredient in some anti-dandruff shampoos (I’m guessing because it helps with flakiness) but it’s also used in a color-protection shampoo that I like. I’m wondering if you know what benefit it might have in hair care other than as a dandruff treatment? I’d…