Welcome t5o HCM,
The most common cause of having these bumps on forehead is having dandruff
So please see that you have got dandruff or not.
If it is there then go for dandruff treatment with Selsun
or Selen shampoo.
Keep your hair neat and clean.
Do facial wash 2-3 times in a day with branded facial wash lotion.
You can apply Triple action cream on affected area.
Ok and bye.