Bio-Oil, £8.99 for 60ml, boots.com
This cult beauty buy has won more than 200 skincare awards, costs less than a tenner and is popular with many famous mums. 'I smothered myself in Bio-Oil three to four times a day during my pregnancy,' says TOWIE star Billie Faiers, mum to Nelly. 'I kept it in my handbag.' The Saturdays singer Una Foden, who recently gave birth to her second child, a son called Tadhg, says: 'I discovered Bio Oil while I was pregnant with my daughter Aoife and loved it so much I carried on using it. I even use it on my face.' The bright orange oil contains plant extracts and vitamins to hydrate and strengthen skin and it's also been proven to improve scar healing.