Actives ingredients are natural ingredients that have been scientifically proven to change the structure of your skin at a cellular level. They work to address the skin concern the product is meant to target.
They will repair, rejuvenate, hydrate and protect your skin.
On the opposite, inactive ingredients are synthetic ingredients used to formulate the product. They are used to make a product smooth to apply, smell nice, or look good.
The real effort in selecting real clean beauty brands is to choose product formulas that have the most active ingredients and have been reformulating so many times in order to have the same smooth texture and nice smell as a conventional product will have, but without the nasty ingredients that damage your skin and health overall.