Dr. Ivar van Heijningen
MD, Plastic Surgeon

A renowned plastic surgeon of the Dune Mounts Clinic at Knokke in Belgium and prestigious member of the Belgian Association for Plastic Surgery, the Dutch Association for Plastic Surgery, among several other reputable organizations, Dr. van Heijningen, has worked with some of the top beauty specialists in the world. 

As a specialist in anti-aging, Dr. van Heijningen suggests only the highest quality products for his patients, including strong recommendations for 4VOO products to his patients before and after treatments. 

Dr. Svatopluk Svoboda
MD, Plastic Surgeon

One of the top Czech plastic surgeons, Dr. Svoboda has served as a member of the Transplantation Laboratory Institute of Experimental Medicine at the Czechoslovak Academy of Sciences Division since 1977. Also an Assistant Professor of Plastic Surgery and postgraduate medical training, Svoboda has witnessed first-hand the remarkable results his patients have been getting. Dr. Svoboda highly recommends 4VOO products to his patients for their highest quality ingredients.

Nathan Johnson
celebrity makeup artist

A celebrity makeup artist with extensive experience, Nathan Johnson is strongly behind the 4VOO line. Trying many brands, Nathan believes 4VOO products are superior in quality to many on the market. Nathan uses 4VOO products with several of his clients, including many celebrities. 

Nathan is a frequent contributor to Sephora Beauty, Glamour Magazine, and Genre Magazine, and works with several film, theatre, and television companies, including CBS. 

Dr. Bruce Katz
MD, Dermatologist

Named repeatedly as one of the best doctors in New York by New York Magazine, Dr. Bruce Katz is Clinical Professor of Dermatology at The Mount Sinai School of Medicine, Director of the Cosmetic Surgery & Laser Clinic at Mount Sinai Medial Center, and Director of the Juva Skin & Laser Center in New York. 

As a leading expert in anti-aging, Dr. Katz was featured recently in Men’s Health Best Life endorsing 4VOO products. Dr. Katz routinely appears as an expert for the foremost skin care products in Men’s Health Best Life. 

Dr. Dita Seredi Voronovova
MD, Dermatologist

Part of a highly respected team of Czech doctors at the Skin Clinic General Teaching Hospital devoted to the evolving field of corrective dermatology, Dr. Dita Seredi Voronovova has worked as a physician at Skin II. 

Dr. Voronovova became a strong advocate of 4VOO products after seeing the tremendous benefits her patients were receiving after using them.