(a) C a � L.. a m 100 80 60 40 20 0 U. DA VI DIANA EXTRACTS IN COSMETICS c:::J Water Ulmus extract Hyaluronic acid 1,3-Buthylene glycol 20 40 60 80 100 Time (hr) 359 120 (b) 70 ....-----------------------, C a m L.. 60 40 0 30 a. m W 20 10 0 c:=i Water Ulmus extract Hyaluronic acid 1, 3-Buthylene glycol 20 40 60 80 100 120 Time (hr) Figure 2. Water loss profile of U Imus davidiana root extract as a function of time in a desiccator at 15 % RH (a) and at 55% RH (b). The data are expressed as mean values (± standard deviations) of three experiments.

360 JOURNAL OF COSMETIC SCIENCE (a) 40 --- Water 35 -o- Ulmus extract ----T- Hyaluronic acid - 30 -v- 1,3-buthylene glycol (]J 25 0 20 0 :J 15 10 5 o o 3 6 9 12 15 18 21 Time (min) (b) 35 30 .-. 25 0 20 0 15 :J 10 ----e- Water -o- Ulmus extract 5 --T-- Hyaluronic acid --v- 1 ,3-buthylene glycol o o 10 20 30 40 50 60 70 80 90 100 Time (min) Figure 3. Moisturizing effect measured by Corneometer CM 825 of Ulrnus davidiana root extract solution (1 %) (a) and formulation containing 10% of Ulrnus davidiana root extract solution (1 %) (b). The data were collected five times from one person in a group of ten female volunteers and are expressed as mean values (± standard deviations) of five experiments.