Secrets to Lea Thompson’s beauty: love and yoga

Mrs. McFly has hit the midpoint.

At age 53, “Dancing with the Stars” contender Lea Thompson has learned a few things about herself.

“One of the big secrets about staying vital is to keep working on yourself as a person,” Thompson says in an interview from her Los Angeles home.

“If you just keep growing, you’ll never really grow old. If you’re happy in your heart and happy with yourself, that’s half the battle,” she says.

“You have to keep trying every single day to become a better and a kinder person.”

The “Back to the Future” actress also is on the big screen now in “Left Behind.” Asked for beauty tips, she recommends one above all others.

“At this age, it’s about the love that comes out of you,” she says. “Being a loving person makes you more beautiful.”

Her other tips:

MOVE IT

“When it comes to my body, lately I take a lot of yoga, which reduces stress and keeps you in touch with your body. I’m really happy with yoga.”

CUT OUT WHAT YOU KNOW IS BAD

“I don’t do a lot of sugar. I eat what’s natural. I don’t drink and I don’t smoke.”

SIMPLE SKIN CARE

“I keep my beauty regime pretty simple and natural. I can’t use those intense glycolic acids. I keep it pretty basic. I’m using Egyptian Magic from Whole Foods. I use it on my hands, hair and face. It’s a light oil and it does a great multi-purpose job. When you put it on, it feels really greasy and then it just disappears. I put it on before my makeup and my face feels like a grease pit! Then it just melts in.”

AVOID ANYTHING DRASTIC

“It seems really scary to me to do anything else to my skin.”

WORK ON YOUR HOME LIFE

“My happy smile is that because I have two kids and I’ve been married for over 20 years. I have a happy life. People ask, ‘What is your secret?’ The secret to staying married is … you don’t get divorced! That’s pretty much it.”

KEEP IT IN THE FAMILY

“It’s a full show biz house. Someone is always running lines with someone or playing piano and singing. My husband just directed my daughter Zoey. We’re busy, but we do it together which is less stressful. We know that someone who cares has our backs.”

KEEP DANCING

“It’s the best workout of all. And it’s fun, so you never have that feeling of ‘I have to do another 10 minutes on the treadmill.’ ”