Kim Kardashian treated her "All's Fair" co-stars to free salmon sperm facials. The reality star, who will appear in Hulu's upcoming legal drama, included the present in gift hampers sent to her castmates.

Kardashian said she curated the bags herself as an early Christmas gift, filling them with designer products from Balenciaga, Gucci, and her own brand, Skims.

The salmon sperm facial was offered as a voucher for the viral beauty treatment made popular by celebrities like Jennifer Aniston.

In an interview with People, Kardashian explained she had personally selected each item for the women in the cast.

Referring to her sister, she said, "Kourtney went to go get a facial yesterday at the salmon-sperm place, and they said, 'Oh, well, none of the girls have used it, so I'm going to give you a free one,'" she shared adding, "I was like, 'Why wouldn't you get it?!'"

Her "All's Fair" co-stars were shocked when the topic came up. Teyana Taylor said, "Wait, I was so excited about the gifts, I don't think I opened the envelope. It was some salmon sperm in there? Girl, why didn't you say that?"

Last summer, Kim revealed on "The Kardashians" that she had undergone the same treatment herself, saying, "I got a salmon sperm facial with salmon sperm injected into my face."

Her sister Khloé Kardashian also spoke about trying the procedure in another episode, saying, "I do the salmon sperm [facials], but I'm never gonna do whale sperm."