Effect of facial application of essence containing royal jelly extract on stratum corneum moisture content: A placebo-controlled, double-blind, parallel-group study.

The application of an essence containing royal jelly extract significantly improved the moisture content of the stratum corneum of the cheeks, confirming the improvement in the moisturizing function of the royal jelly extract. Furthermore, no adverse events were observed at the application site during the application period, and the test products and royal jelly extract contained in the test product were considered highly safe.