The short answer is… No.
Pre-shave oils were designed with key concepts in mind-trap moisture, aid in lifting the hair and protect the skin from the blade. All of these work to enhance the shave by preventing irritations-one of which is ingrown hairs. Over 90% of all commercial pre-shave oils contain natural essential oils like – Chamomile, Coconut, Lavender, Eucalyptus and even Olive oil to name a few. In fact Tea Tree and Lavender are two essential oils used to treat acne, so the question of clogged pores is truly a non issue!
With that in mind, unless your dermatologist advises against the use of these oils, I say oil and shave away! The benefits definitely out-weigh the risks…