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In functional cosmetics, nano-DDS (Drug Delivery System) is used to improve the permeation of the active ingredient into the skin and pores. A typical example is a liposome composed of phospholipid molecules. We have focused on the nanoparticle technology using the biodegradable poly lactic-co-glycolic acid (PLGA) developed by Professor Kawashima of Gifu Pharmaceutical University and applied to functional cosmetics since 2004. PLGA nanoparticles have the characteristics of (1) permeability todoi:10.24611/micromeritics.2020012 fatcat:ehjcqrcqpvewhfar2ggyf7nx4a