Korean Journal of Acupuncture

Fig. 3.

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Fig. 3. Frequency of effect index used in acupuncture studies for wrinkles. The ‘skin wrinkle’ item includes the range of wrinkles, number of wrinkles, and depth of wrinkles. The ‘skin melanin’ item includes the numerical value of melanin, the variation of pigment, and skin brightness.
Korean J Acupunct 2021;38:62-74 https://doi.org/10.14406/acu.2021.009
© 2021 Korean J Acupunct