| 摘要 |
Soap-based clear cosmetic sticks are disclosed which include 2-methyl-1,3- propanediol in the composition to increase the set temperature, and also the stick hardness. A typical composition of the present invention comprises abo ut 20 to 50 %, preferably 28 to 46 %, of 2-methyl-1,3-propanediol, about 3 to 1 2 %, preferably 4 to 8 %, of an alkali metal salt of a C12-22, preferably C14- 18, fatty acid, about 10 to 42 %, preferably 18 to 30 %, of a polyhydric alcohol other than 2-methyl-1,3-propanediol, and about 5 to 35 %, preferably 15 to 30 %, water. To achieve the highest set temperature the composition should also contain an alkali metal salt, preferably a sodium or potassium salt, particularly an alkali metal halide such as sodium chloride or an alka li metal chelate such as di-, tri- or tetra-sodium EDTA. The composition will also typically contain a cosmetic active ingredient such as a deodorant active. Preferably the composition will contain less than 0.3 %, most preferably less than 0.2 %, of C20-22 soap in order to achieve maximum clari ty.
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