"I then apply a hydrating lip balm that is butter, oil and wax-based – my favourite is eos Super Soft Shea Lip Balm Stick & Sphere ($5). It contains skin-nourishing and vitamin-rich shea butter which provides lips with 24-hour hydration, and the balm helps to lock in moisture by occluding the skin barrier and preventing trans-epidermal water loss. This is an especially important step for me these days as I'm wearing a mask all day when I see patients and the friction against the mask can be irritating without a lip balm providing a protective barrier."