Pydana Collection Herbal Silk Collection is the original best-selling line from Pydana Collection. Formulated by the founder and Clinical Laboratory Scientist Rochelle Pydana, a natural herself. The Herbal Silk Line was born out of a need for something that Rochelle and her family could use in their transition to natural. To get away from continuous heat, perms and other unhealthy treatment of hair she came up with products that were effective, pleasant, and safe for textured, curly, kinky hair types from 3 up to 4C.