HOLLYWOOD starlet Sandra Bullock has revealed "penis facials" are the secret to her youthful appearance.

The 53-year-old appeared on the Ellen DeGeneres show this week to discuss her beauty regime, which involves cells taken from the foreskin of Korean babies.

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The cells are then cloned in a laboratory before being put onto the face through a "microneedling" technique.

The mum-of-two said: "It pushes through the skin and ruptures the collagen and then boosts it.

"You look like a burn victim for a day, but then it pushes the serum in."

Sandra awkwardly described the process as: "It is an extraction from a, um, a piece of skin that came from a young person, far, far away, and they somehow figured out how to extract..."

Prompting Ellen to respond: "It's foreskin from a Korean baby. That's what it is."

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However, Sandra stood by the unusual measure, stating she wasn't "lying there with little pieces all over my face".

She added: “I call it the penis facial and when you see how good it is to your face, you too will run to your local facialist and say, ‘Give me the penis.’”