Soft, water-filled polymer nanotubes of several tens of microm in length have been prepared via self-assembly of amphiphilic ABA-triblock macromonomers in aqueous media; the tubes are mechanically and chemically stable and can be loaded with water-soluble substances.
Despite the small discrepancy remaining between WRR values obtained from the in vitro solution method and in vivo method, which itself shows variability in results, this work provided a new insight into the in vitro testing of water resistance of sunscreens.
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