The singer-and-actress insists she keeps her skincare regime to a minimum and credits her appearance to lots of sleep, drinking water and relaxing.
She said: "I try to get enough good sleep, about seven or eight hours and I drink a lot of water.
"I don't have facials or treatments. I don't like messing with my face or my skin too much. I don't do scrubs or peels or anything like that, I just do the basics. I use moisture masks a lot though.
"If I have a red-carpet event, I'll do a face mask in the morning. And I'll take a nice bath to relax myself because I think the better you feel, the better you look. Then I'll have a coffee and take the day slow. I don't like to rush."
Jennifer – who is married to Marc Anthony – also admitted she struggled to get back in the exercise habit following the birth of her twins Max and Emme, now three.
She added to Company magazine: "After I had the babies, I wasn't motivated at all. I did a triathlon, which was a goal I had set for myself before having them. I did it because I'd said I was going to do it and it was for charity. After that, I stopped exercising totally for a while.
"I was tired, the babies were my life and I just wasn't motivated. It took a lot of mental energy to get focused again."