abstract |
PROBLEM TO BE SOLVED: To provide a compound exhibiting excellent viscosity stability in a low pH system or a system in the presence of a cation, and having high emulsifiability, hydration ability and moisturizing property, and a skin external preparation containing the compound. thing. A propylene glycol hyaluronate having a degree of esterification of 10 to 90% and an intrinsic viscosity of 3 to 35 dL / g, and an external preparation for skin containing the propylene glycol hyaluronate. |