“The course is terrific. I wished I had such a course long time ago. Perry’s instructional skill is awesome, especially the way he organized the subject very detailed. I would refer this course to someone who would like to have interest in practical cosmetic formulation.”

"The class is extremely interesting and I truly appreciate each page/slide or video offered, enjoying them to the maximum!”.

“The courses are written in a simple and understandable way especially for me that English is my third language and I don't find any problems to understand”

“The courses are very good and helpful. The lectures are really amazing. I can say Perry is my best teacher I have ever have. I learn a lot from him and hope to learn more and more. “