In fact, according to the Daily Mail, the 33-year-old Brazilian beauty admits that she doesn't even own a hairbrush.
"In my job you have to remember people are brushing my hair every day. You have to remember the last thing I want (on a day off) is a brush in my hair!" said Bündchen, who was recently named Pantene's newest ambassador.
So, when she's not working, Bündchen joked that her hairstyle of choice is simply a "sleek bun."
The mother-of-three also shared how she and her husband, New England Patriots quarterback Tom Brady, relax while at home.
"At night if my husband is watching TV and watching football, I have my little book and I put something in my ears so I don't hear it and I put my light (on) and have my book and I'm like, 'Ohhh.' He's feeding his soul and that's important to him to watch football. I only watch if I'm watching him," she said.
Which means Bündchen will certainly be tuning in this weekend when the Patriots take on the Denver Broncos for the AFC championship.
Of course, when Brady is not keeping busy on the gridiron, he's spending quality time with his wife and kids.
"He's very loving and it's a wonderful thing. In our house we are very affectionate," Bündchen said.