Bio oil is marketed a lot. My bhabhi was 5 months pregnant when she got to know about bio oil and she started using it. It seemed to her in the first that she would get benefitted and will have less visible marks as she has put on a lot of weight. But eventually she realised that it had done no good to her.
Her baby is 1 year old now, she used it until her baby qas 6 months old but fpund no cure.
She feels that had she applied or researched more about it through word of mouth, it would have helped her.
Scars do become light but it doesnt work on stretch marks
Moistre is one product which works realky well for stretch marks.