Did My Conditioner Cause My Hair to Thin?

hi, im 17 and i have always had thick hair, though recently i have noticed that it has thinned out. This has happened around my ears and towards the back. Though my fringe is still very thick. I conditioned my hair very roughly a few weeks ago and continued so up until i noticed it a few days ago. Do you think the conditioner or the way i administered the conditioner has something to do with the thinning? and will it grow back?

I highly doubt that the use of hair conditioner has thinned your hair. Otherwise it would be called a hair thinner, rather than a hair conditioner. If for any remote possibility that hair conditioner was the cause of your hair thinning, you would have experienced hair thinning all over — not only “around ears and toward the back” as you describe.