Review about clarins stretch mark control

Hi everyone, I know a lot of mummies rave about the clarins stretch mark control cream. I would like how you all apply the product? I just bought the beautiful mum set but the instructions recommended to wash off the tonic oil after applying. It’s a bit of a hassle I thought. Do you all use the tonic body treatment oil and the stretch mark minimizer cream together? If I’m not going to wash off the tonic oil, is it ok to apply the cream after I apply the oil?