“Finally, I make my face look like a glazed donut every time,” Zubritsky adds. By this, she means slugging—which involves applying a thicker, more occlusive moisturizing product over your normal moisturizer to lock in hydration.

“Flying is one of the most dehydrating things you can do because of the super-low humidity,” she explains; hence, why this step is one of her essentials. 

You could opt for petrolatum-based products (i.e., anything with mineral oil), but those aren’t necessarily the best for every skin type, plus they aren’t so great for the environment. Instead, try layering a face oil over your moisturizer to reap the occlusive benefits without the stickiness.