Thank you for your question and welcome to Just Answer.
You have nothing to worry about. This can be treated by purchasing a tongue scraper at your pharmacy and physically pulling off the white "hairs" that you see. The small papillae that make up the fine pink carpet of the top of your tongue have failed to shed their excess cells as they grow. There are a few precipitating factors that can cause this to happen that are described in the following web links:
I hope this answers your question. If you would like to discuss this further or have any additional questions, please reply to my answer and I will get right back to you.
Sincerely, XXXXX XXXXX DDS
You might have a yeast infection in your mouth. This is one of the precipitating factors that can cause hairy tongue. If this is the case it can be treated with anti fungal medication (Nystatin lozenges). However, these papillary extensions are quite resilient and can be difficult to remove with a brush alone. A tongue scraper will get them off however. I hope this helps.
You are most welcome. I wish you well.