32 JOURNAL OF COSMETIC SCIENCE
Nymphaea tetragona (rhizome), and Camellia japonica (leaf) completely inhibited MMP-1
expression in human fibroblasts and could be developed as active ingredients for anti-
aging cosmetics. These results encourage us to find the active compounds of those
extracts. Further study regarding the active compounds is necessary, and we hope to
report the results of these investigations in the near future.
ACKNOWLEDGMENT
This work was supported by a grant from the Ministry of Commerce, Industry, and
Energy, "The Development of an Active Ingredient for Skin Physiology and Its Appli-
cation in Cosmetics" (subject number 2004-10014847), as part of a regional special-
ization technique development project within a regional industry promotional project of
the Ministry of Commerce, Industry, and Energy.
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