Bio Oil is used for stretch marks, scars, uneven skin tone, aging skin, and dehydrated skin. This is what it says on the bottle, lol. Well uhm I bought it and used the whole thing and I haven't really notice any changes. My stretch marks look the same and it doesn't really absorb into the skin that fast. 

Hope that helps! 

-L (: 

I know that it is recommended durin pregnancy to help one's skin, to add elasticity and firmness and prevent stretchmarks.