Dr. Barbara Sturm’s skincare brand just gained some serious star quality.

Oprah Winfrey has invested an undisclosed amount within the skincare brand, the multihyphenate revealed Thursday during an interview with the German aesthetics doctor, adding that designer Stella McCartney introduced her to the products.

“Dr. Sturm has a revolutionary skincare line that has blossomed into a world empire, and it was Stella McCartney actually — she is such a sweet friend — she sent me a few of the products and I used to be like, ‘what is that this? what is that this?’ And I like it a lot that I then called up Dr. Barbara Sturm, and said, ‘I would like to speculate in your organization,’” Winfrey said during a session of O Each day talks at Hearst Tower in Recent York City. “I actually have never done that before. Ever. So, that’s how good the products are.”

Sturm, an aesthetics doctor with training in sports medicine, launched the Dr. Barbara Sturm Molecular Cosmetics collection on Net-a-porter in 2014. Two years later, she launched Darker Skin Tones by Dr. Barbara Sturm with actress Angela Bassett.

The lines are actually stocked in Sephora, Nordstrom, Amazon and more. Amongst Winfrey’s favorite products are Enzyme Cleanser, $75, and  Glow Drops, $150.

Recently the brand opened two latest spas in Recent York, one uptown on Madison Avenue and one downtown in SoHo. The treatment menu includes Super Anti-aging Facial, Exoso-metic Growth Factor Facial and the Non-surgical Facelift Facial.

Of the investment, Sturm said: “Oprah loving the products and coming into our business is an enormous honor and testament to the brand and our anti-inflammatory, skin barrier-strengthening philosophy. It also gives us access to a wider audience to bring free science-backed skin education to everyone.”

A representative for Sturm didn’t disclose another investors in the corporate, which is privately held.