It is customary to say that the best jams or soups are made in old jars. The adage can also be applied to areas other than jams!
I gladly take the title of a recent article from Expression Cosmétique (EC 64 – 76/84) which describes some current ingredients, July August 2020, based on older things that I have the pleasure of forwarding: Back to basics
Expression Cosmétique had moreover had the idea to take up an article of this kind some time ago: EC 42 – November December 2016. This article made a somewhat more historical inventory of these questions: article JCLJ Cosmetotheque
Thanks to Anthony Boivin, the editor, and Véronique Louis, the editor-in-chief for this contribution.
Jean Claude LE JOLIFF