My Left Temple Thinned and Now I Have Scars After Using Head & Shoulders

Im 20 yrs old guy and 2 weeks ago I saw the hair in my left temple looked fine. It’s thinning out really fast and I dont know what’s wrong. My hair in the left temple is thinning fast.I noticed this after getting head and shoulders. I used a comb to scrub my head with H&S (I tried to clean something out of my head) Could this be the cause? My temple thinned in a 2 week span. Also I notice I have about 2 scars in my left temple now.

Shampoo isn’t going to cause scars on your head. It’s possible that you had the scars, but they were covered by surrounding hairs and not noticeable.

If by “temples” you mean the corners of the hairline, the loss you’re describing sounds like a maturing hairline (particularly at 20 years old). Many people call the hairline corners the “temples”, even though the temple peaks are actually the points between your hairline and your ears.