Final answer:
To help empty the oil ducts, effleurage, with its gliding strokes directed towards the heart, is effective at promoting lymphatic drainage and clearing ducts of build-up. Petrissage, which is more pressure intensive, can also be beneficial if done properly.
Step-by-step explanation:
The massage movement that would help empty the oil ducts is known as effleurage. This technique involves long, light, gliding strokes that can help increase circulation and promote relaxation.
When directed towards the heart, effleurage can assist in lymphatic drainage and can help clear the ducts of any build-up by gently pushing the oil through the ducts.
Another technique is petrissage, which uses kneading movements to apply more pressure, can also be effective, but must be done carefully in order not to overstimulate the oil glands.