How to remove or fade old scars?

Does anyone know how to remove old scars. I have a lot. Most people have like 3 or 4 but i have like 20 on each arm because i used to have cats and had surgery. Its embarrasing i have to always were long sleeves even in the summer or a sweater. I need to remove or atleast fade them. Ill try anything creams and home remedies. ANYTHING!!