Matthew McConaughey’s teenage son, Levi, knows the importance of maintaining good hygiene thanks to the “Interstellar” actor.

Levi, 17, shared the No. 1 grooming tip he learned from his famous father, which is to “stay clean all the time.”

“It’s important,” he told People at a Clarins event in Austin, Texas, on Oct. 18.

He also shared how his mother, model Camila Alves, and his younger sister, 15-year-old Vida, help him out with basic skincare.

“Just some cleanser, moisturizer and a little something that my sister and mom slip in there,” he said of his routine.

Aside from Levi and Vida, Matthew and Camila also share a 12-year-old son, Livingston.

Levi credited his “glow” to his family, noting it came from “spending some great time with them, and time with myself.”

Levi made a ra

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