Phytoderm does not sell its products on line. Therefore, G.M. Collin or Yon-Ka products offered for sale by unauthorized resellers or internet merchants are not approved by Phytoderm and are not backed by our quality, authenticity and satisfaction guarantees.

Phytoderm strongly recommends purchasing our products only through recommendation by licensed treatment professionals at G.M. Collin or Yon-Ka authorized clinics and spas.

Phytoderm invites its clients to be cautious when buying cosmetic products and to contact the corporate Customer Service at 1-800-361-1263 (Canada) to find the authorized G.M. Collin and Yon-Ka merchants.