She continued: "I don't like a lot of steps as I don't usually have the time."
So what are her steps?
"I start with cleansing and washing, then putting on a serum and moisturiser. If I have more time at night, I'll put on a face mask or extra moisturiser."
She added: "I never sleep with my make-up on, even at my drunkest I've never fallen asleep with make-up on my face.
"Sleep and rest is so important for the skin. If I'm working and travelling a lot and my sleep schedule is off I notice my skin gets really dry."
She admitted to husband Justin's skin issues as well: "Justin has struggled with adult acne. After he works out he uses clarifying pads to wipe the skin after he’s been sweating."
Right now, Hailey isn't looking to start a family with Justin, so she's on the pill. But that still effects her skin.
"I'm on a birth control now where I don't have a period, but I still feel symptoms of PMS and this can also affect my skin too," she said.
"My skin actually stays a lot better in Canada where there's cleaner air, than when I'm in New York or Los Angeles."
Celebs - they're just like us!