| abstract |
(57) [Summary] [Structure] A high-concentration urea-containing composition containing 12 to 40% by weight of urea, 4 to 78% by weight of a linear polyhydric alcohol, and 10 to 84% by weight of water based on the total amount of the composition. Further, in a weight ratio, urea: linear polyhydric alcohol = 1: 6.5 to 3: 1, urea: The high-concentration urea-containing composition, wherein water is in the range of 1: 7 to 4: 1. The high-concentration urea blended composition wherein the weight ratio of urea, linear polyhydric alcohol and water is within the range shown by the shaded area in the triangular phase diagram of FIG. Linear polyhydric alcohol is HOCH 2 (CHOH) n CH 2 OH (n = 1 to an integer of 4), wherein the high-concentration urea compounding composition. [Effect] The effect of suppressing the precipitation of urea crystals from the composition over time even under a severe storage condition for a long period of time or when the composition is applied to the skin while the urea is blended at a high concentration. Have. |