Is it normal to feel this?

I feel this sensation when I not necessarily rub my skin but when I grab at it. For example: I grab skin from my back or kinda massage my face and it feels like im taking stress out? I know that massaging your skin releases cortisol, but it's such a good feeling. Specially when I have stressful days at school or with the parents. Im wondering if you guys know what feeling Im talking about and if it's normal.