We define an active as a substance that scientific research has shown helps skin in one way or another. This is a very broad definition but one that has been useful to us in our daily work. Among our actives you will find natural plant extracts, synthetic oligopeptides, chemicals purified from algae, and lots more. The only thing all of these have in common is that they have been shown to benefit the skin, and that the data has been published in scientific journals that are in the public domain, most of them in peer-reviewed journals. What we do not include are ingredients whose only support data have been obtained by other commercial companies.