You wear it well. Those stretch marks from your pregnancy or persistent scarring from that operation is all but a sign of an arduous yet beautiful battle worth the fight, and far from anything you need to hide. But we all have reasons that we might want our scars or marks diminished, even if it's just to stop the irritating itch that might come with it or if it's something that seems to affect our self-esteem more than can be helped. And for that, the mum-certified Bio-Oil, that's pretty much gained a name in it's own right, has been one to promise wonders — from increasing the elasticity of skin to reducing the appearance of scars. It has been touted to be a lifesaving remedy that you don't want to overlook, especially since it's even good enough to be plugged to help with acne scars...? But for something that's pretty much looking to be a beauty hack of the industry, we can't help but be a little curious: what's really in this bottle, and what does it actually do for our skin? We find out, below.