How Can Lip Stitch Marks And Forehead Scars Be Removed?

i had 3 stitches on my upperlip 2 days back.i m using Betadine lotion and B-bact oinment.after the wounds get healed,how will i remove the stitch marks?Also i hv a few cuts n my forehead.how will i remove the scars? i m 22 years of age and my weight is 70kg