The 52-year-old is so convinced by the skin-rejuvenating properties of livestock afterbirth that he has become a devotee of the 330-pound-treatment, Daily Mirror reported.
The special facial is carried out at the Beverly Hills Lancer dermatology clinic that is reportedly also frequented by Victoria Beckham.
In the facial, a therapist applies the stem cells from special, New Zealand-reared sheep, which is then spread over Cowell's face.
But before this happens, Cowell's face is given a thorough 30-minute exfoliation and beamed with an LED light to open up his pores.
From here, the stem cells are smeared on in a gel mixed with 24 carat gold flakes.
Lancer therapist, Linda, let slip Cowell's secret on ITV1's Lorraine, enthusiastically adding, "He loves it!."