Vesicle and cosmetic containing the same
A technology for vesicles and lotions, which is applied in the field of improving stability, can solve the problems that the stability of heat-resistant film does not have practicality, etc., and achieve the effects of excellent moisturizing effect, usability and high safety.
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Embodiment 1
[0044] The stability of the vesicles obtained according to the formulation and production method shown in Table 1 below was evaluated. The evaluation method of stability is as follows.
[0045] Determination of Turbidity Change
[0046] For each test sample immediately after the preparation of the vesicles, and after storage at 0°C, RT (room temperature), and 50°C for one month, use an absorption photometer (Ubest-55 JASCO Corporation) to measure the concentration at a wavelength of 600 nm. Absorbance (Abs.) represents the change in turbidity as (Abs. after storage / Abs. immediately after preparation). The results are shown in Table 2.
[0047] Exterior
[0048] The dispersion state of the vesicles of each test sample after preparation was visually observed for 1 hour, and evaluated according to the following criteria. The results are shown in Table 2.
[0049] ◯: Agglomerates and precipitates were not observed.
[0050] Δ: Some aggregates and precipitates were found....
Embodiment 2
[0065] Cosmetics (lotions) were prepared according to the formulations and production methods shown in Table 3 below, and the stability of vesicles in each sample was measured. The evaluation method is as follows.
[0066] Determination of Turbidity Change
[0067] For each sample immediately after preparation, and after storage at -5°C, 0°C, RT (room temperature), and 37°C for one month, use an absorption photometer (Ubest-55 JASCO Corporation) to measure The absorbance (Abs.) of the product is expressed as (Abs. after storage / Abs. immediately after preparation) to express the change in turbidity. The results are shown in Table 4.
[0068] In addition, the samples of Test Examples 11 and 12 were similarly calculated for changes in turbidity when they were stored for 2 months under the conditions of -5°C, 0°C, RT (room temperature), and 37°C. The results are shown in Table 5.
[0069] [table 3]
[0070]
[0071] (Manufacturing method)
[0072] Dissolve sucrose diest...
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