A slow-release milk carrier for whitening and removing freckles and its preparation method
A whitening and freckle-removing, slow-release technology, which is applied in the fields of slow-release milk and its preparation of whitening and freckle-removing active ingredients, slow-release milk carrier and its preparation, and can solve the problem that the active ingredient cannot achieve the long-lasting and slow release effect, the active ingredient is unstable, Waste of active ingredients and other issues can be achieved to improve efficacy and stability, facilitate long-term storage, and reduce the number of times of use
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Embodiment 1
[0031] (1) Accurately weigh 2.1g jojoba oil, 0.4g isopropyl myristate, 0.1g vitamin E and 1.5g propylene glycol, mix and stir them evenly as the oil phase;
[0032] (2) Accurately weigh 0.1g arbutin and 2.25g deionized water, heat to 45°C, stir and mix evenly as the water phase;
[0033] (3) Accurately weigh 0.5g of hexagonal mesoporous silicon, 2.5g of Span 80 and 0.5g of Tween 80, mix them, and add them into the oil phase after ultrasonication for 10 minutes;
[0034] (4) Slowly add the water phase to the oil phase drop by drop under stirring, adjust the pH value to 6.83 with 0.05 g of triethanolamine, and continue stirring at 800 rpm for 12 hours to form a slow-release milk for whitening and freckle removal.
Embodiment 2
[0036] (1) Accurately weigh 2.0g jojoba oil, 0.5g isopropyl palmitate, 0.1g vitamin E and 1.5g propylene glycol, mix and stir them evenly as the oil phase;
[0037] (2) Accurately weigh 0.05g of arbutin and 2.4g of deionized water, heat to 45°C, stir and mix evenly as the water phase;
[0038] (3) Accurately weigh 0.4g of hexagonal mesoporous silicon, 0.6g of Tween 80 and 2.4g of Span 80, mix them, and add them into the oil phase after ultrasonication for 10 minutes;
[0039] (4) Slowly add the water phase to the oil phase drop by drop under stirring, adjust the pH value to 6.72 with 0.05g sodium hydroxide, and continue stirring at 800rpm for 12h to form a slow-release milk for whitening and freckle removal.
Embodiment 3
[0041] (1) Accurately weigh 1.3g jojoba oil, 0.7g lemon oil, 0.1g vitamin E and 1.5g propylene glycol, mix and stir them evenly as the oil phase;
[0042] (2) Accurately weigh 0.1g of arbutin and 2.8g of deionized water, heat to 55°C, stir and mix evenly as the water phase;
[0043] (3) Accurately weigh 0.45g of hexagonal mesoporous silicon, 0.6g of Tween 80 and 2.4g of Span 80, mix them, and add them into the oil phase after ultrasonication for 10 minutes;
[0044] (4) Slowly add the water phase to the oil phase drop by drop under stirring, adjust the pH value to 6.35 with 0.05 g of phosphoric acid, and continue stirring at 800 rpm for 12 hours to form a slow-release milk for whitening and freckle removal.
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