A true beauty icon, everything from Jackie Kennedy’s fashion choices to her skincare routine is just as influential now as it was in the 1960s. Her signature look—a voluminous bouffant hairstyle, bold brows, and oversized sunglasses—came to define what was in vogue at the time.

Half a century later, people are still following the former First Lady’s beauty tips, including her much talked-about skincare regimen. Along with old Hollywood royalty like Audrey Hepburn and Marilyn Monroe, Kennedy turned to Dr. Erno Laszlo for radiant, youthful-looking skin. In fact, the famous dermatologist often created custom prescriptions just for her.

For example, you can purchase the same Dead Sea Mud Cleansing Bar Kennedy used in her skincare routine for just $38. Designed to be used after an initial scrub with the Erno Laszlo Pre-Cleansing Oil, the bar was a pioneering product for what’s now commonly known as double cleansing.

The paraben-free anti-aging cleanser uses a combination of charcoal and naturally mineral-rich mud from the Dead Sea to detoxify and exfoliate skin as it minimizes pores. It also includes glycerin to moisturize and hydrate skin, along with palm oil to regulate the skin’s oil content and protect against outside stressors.

Though you might be skeptical of washing your face with a cleansing bar rather than traditional liquid or gel formulas, these classic skincare products have their own benefits. It’s difficult for bacteria to thrive on the bars since they offer unfriendly environments for microbes that may grow on sebum oil found in the skin, making them highly effective cleansers.

“I’ve used this for 20 years. I love it [and] it lasts a long time. I’ve strayed from time to time, but there is no replacement. I always come back,” one reviewer wrote. Another said, “I’ve been using this product for 50 years… It keeps my face clean and happy.”

Shoppers also note that the bar works wonders on a variety of skin types. “This soap is a miracle for sensitive, acne-prone skin,” according to one user. “[It] really helps to keep my young oily skin clear of acne,” said another.

Buy It: $38; amazon.com