You can get bio-oil in superdrug and other chemists.
However in superdrug it as £9.49 for quite a small bottle but I heard it was the best so I bought it anyway.
You can get good deals on ebay with sellers doing multi-packs which works out cheaper.
I am prone to stretch marks and have loads of scars from puberty so I doubt anything will work on me which is why I jave gone for the best that money can buy, so at least I know that I have tried to do what I can.
If I still get them, then I know I couldn't have done anyymore to help myself.
I have been obsessively using it since the day I found out I was pregnant, and will let you all know in six months if it works!