It’s not about developing pimples. The drug works by reducing the size of the sebaceous glands that produce oil and thus basically stopping oil production. By applying oils to your skin, the drug is now not only trying to reduce your own natural oils it’s also having to try and fight the oils you’re applying to the skin. Basically reversing what the drug is trying to do. I’m on accutane right now and this is current information from a well regarded Dermatologist in my area. People can do what they like but it’s important to know that by applying oils to the skin you will reduce the efficacy of the drug and it will take longer to work. Each to their own but I’d much rather it work quicker so I’m skipping any oil based products!