14 Feb 2018 --- Although there is a growing market for orally consumed beauty supplements that promise “youthful,” “firm” and “glowing” skin, the evidence to support some of the ingredients used in these popular, and often costly, products is limited. This is according to a review of published research conducted by the British Nutrition Foundation (BNF). The review concludes that nutraceuticals for skin may not add further benefit to the effects already obtained from a healthy diet.