Just like in most facials after you cleanse the skin, you'll want to introduce some heat. (Although Marino noted this step is "not recommended for anyone with melasma or hyperpigmentation.") This can help soften the pores and make it easier to extract the debris perched up inside.
You can buy a ready-made steamer like the Panasonic Facial Steamer (£110) to make the process easy, or you can go the more cost-effective route. Simply boil hot water on the stove, throw some tea in the water to amp up the spa-like sensorial experience, and "hover over the pot with a towel over your head to trap in steam for five minutes," she said. "Don't do any longer or it can cause transepidermal water loss and dehydration."