Kim Kardashian and Khloé Kardashian are facing backlash after revealing they traveled to Mexico for stem cell procedures outlawed in the United States, sparking safety concerns and criticism over their public endorsements of the therapy, RadarOnline.com can reveal.

The 44-year-old Skims founder and her sister, 41, both shared posts on Instagram this month about undergoing Muse stem cell treatments at a clinic in Mexico run by Canadian doctor Adeel Khan . Article continues below advertisement

Kardashians Blasted For Banned Stem Cell Therapy Article continues below advertisement Article continues below advertisement

While they described the results as "life-changing," experts warn the procedures remain unapproved by the US Food and Drug Administration due to questions over s

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