Although the ingredient is generally not differentiated by derivatives or variations, terpenoids, flavonoids, phenolic compounds, vitamins and minerals are present in various regions of the whole organism. Therefore, to provide a wide spectrum of nutrients to the skin, a whole plant extract is preferred over extraction of a specified region.
-
Also, since polyphenols are heat sensitive, the extraction method - especially one that does not involve high temperature - is also important when considering the bioactivity and efficacy of the ingredient.