Personal care compositions that deposit sunless tanning benefit agents
A personal care and composition technology, which can be applied to skin care preparations, medical preparations containing active ingredients, and cosmetic preparations, etc., and can solve the problems of low deposition efficiency and no consumer benefits.
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Examples
Embodiment 1
[0181] Example 1: Glycerin as a Hydrophilic Benefit Agent
[0182] Add 1 mL of 0.01 N HO to the container containing the tape strips 2 SO 4 aqueous solution and 9 mL of methanol, vortexed for 1 min, sonicated for 10 min, allowed to stand for 30 min, and filtered using a 0.45 μm pore size syringe filter. The total volume of the filtrate was concentrated to 1 mL using a gentle nitrogen stream. Using a high-performance liquid chromatograph (HPLC, model 2595, Waters Corp., Milford, MA) equipped with a differential refractometer detector (model 2414, Wates Corp.), the following conditions were used: IOA-1000 chromatographic column (300mm ×7.8mm, Alltech Associates, Inc., Deerfield, IL), 0.01N H at 65°C 2 SO 4 The isostatic flow rate of the aqueous solution is 0.6ml min -1 , and the injection volume was 10 μL.
Embodiment 2
[0183] Example 2: Using dihydroxyacetone as a hydrophilic benefit agent
[0184] Add 1 mL of 0.005 N H to the container containing the tape strips 2 SO 4 aqueous solution and 9 mL of methanol, vortexed for 1 min, sonicated for 10 min, allowed to stand for 30 min, and filtered using a 0.45 μm pore size syringe filter. The total volume of the filtrate was concentrated to 1 mL using a gentle nitrogen stream. Using HPLC (model 2595, Waters Corp.) equipped with differential refractometer detector (model 2414, Waters Corp.), apply the following conditions: 10A-1000 chromatographic column (300mm * 7.8mm, Alltech Associates, Inc.), 0.005N H at 65°C 2 SO 4 The isostatic flow rate of the aqueous solution is 0.6ml min -1 , and the injection volume was 40 μL.
[0185] 6. Identification of Association Structures
[0186] The formation of an association structure can be identified using one or more of different identification techniques. The initiation of association structure f...
Embodiment 1 to 7
[0190]
[0191] The personal care compositions of Examples 1 to 7 can be prepared by conventional formulation and mixing techniques.
[0192] The aqueous phase composition is prepared by first dispersing hydroxypropyl starch phosphate in water. Add emulsifying wax and heat to 71.1°C (160°F). Next, place the mixing vessel in a water bath to cool below 37.78°C (100°F). Add fragrance.
[0193]Prepare the structured sunless tanning liquid by first premixing the sunless tanning liquid with the structurant, if desired (ie not premixed by the supplier). Next, the structured sunless tanning liquid or sunless tanning solid is mixed together with the surfactant.
[0194] The structured and surface modified sunless tanning composition is mixed together with a lipid to form a lipid phase. If the lipid is solid or semi-solid, preferably a structured sunless tanning liquid is added to dissolve the lipid.
[0195] The lipid phase is added to the aqueous phase and mixed by conventiona...
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Abstract
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