To or for

That depends on what you are trying to say.
What is your intended meaning?

For is used if there is a positive reason. I'm doing this for you because you were so helpful to me while I was ill. To is often used if there is a negative reason (like punishment). Why are you doing this to me (yelling at me, treating me poorly)? What have I done to deserve it?
I hope this helps.

So for example my friend saw something cute on TV like....A boy doing his girlfriend hair.. so my friend should say I wish a boy could do this to me or I wish a boy could you this for me

So for example my friend saw something cute on TV like....A boy doing his girlfriend hair.. so my friend should say do this to me or do this for me

Would you do my hair for me?
Would you brush my hair for me?
Would you style my hair for me?