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What preservatives are suitable for use in loose powder formulations, considering their low water activity and potential for mold and yeast growth?

Cosmetics Powder Preservation Microbial Contamination Stability Stability Testing
Posted by phunyisa_poonmak
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How can I add nourishing oils to finished lip products like Gloss Stain Gel Lip and Glossy Non-Transfer Top Coat to enhance their moisturizing properties?

Cosmetics Lip Product Lip Gloss Hydration Stability Texture
Posted by varissara31365
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Can Mineral Ready™ (Mn+Zn+Cu) be used to make a facial mineral spray, and is it possible to register such a product with the Thai FDA?

Cosmetics Spray Active Ingredient Product Registration Solubility Wrinkle Reduction
Posted by pawanaherb
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The user is seeking a guide for formulating a stable shampoo containing Selenium Sulfide, as they have encountered stability issues with their current formulation. The specific problems observed are: * The color of the Selenium Sulfide changes to black. * The formula separates (both at Room Temperature and in Oven tests). They are looking for a formulation guide or recommendations to address these issues and achieve good stability.

Cosmetics Shampoo Stability Color Changing Phase Separation Suspending Agent
Posted by tongta_p
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How to prevent cloudiness and clumping when incorporating 12H Fix™ (Fragrance Fixative) dissolved in LipidSoft™ into an alcohol-based perfume formulation containing fragrance oil and DI water?

Cosmetics Perfume Turbidity Solubility Mixing Procedure Stability
Posted by thanaboon.benz33
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Is the provided hair treatment formula technically feasible, and how does its cost compare to general hair treatment formulas, considering the specialized active ingredients?

Cosmetics Custom Formulation Active Ingredient Damaged Hair Care Bond Repair Formula Cost
Posted by mckenwel
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Can Caprylyl Methicone be mixed into powder? What is its function when mixed with powder?

Cosmetics Powder Compatibility Dispersion Spreadability Texture Modification
Posted by game115
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Can an odor absorber (like CycloSorb™ Clear) and a deodorizer/fragrance (like DeoMax™ Liquid) be combined in a water-based formula without the odor absorber reducing the effectiveness of the deodorizer/fragrance?

Cosmetics Compatibility Deodorizing Odor Reduction Fragrance
Posted by pockyrainy
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In the provided cream formulation, where should Niacinamide (Vitamin B3) and other whitening agents be added (water or oil phase), and what are the recommended usage percentages?

Cosmetics Cream Skin Brightening Solubility Usage Percentage Mixing Procedure
Posted by siriporn253704
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Seeking the correct method for incorporating Behentrimonium Methosulfate (BTMS 90%) into a face moisture cream containing Carbomer, as previous attempts resulted in difficult dissolution, clumping, emulsion instability, and separation. Requesting guidance on the proper mixing procedure and potential video resources.

Cosmetics Cream Mixing Procedure Dispersion Compatibility Stability
Posted by wirasatri0074
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Expert review and recommendations for a skin whitening cream formula containing Alpha Arbutin, Tranexamic Acid, Niacinamide, Melanin Terminate, Resveratrol, Pure-Sclareolide, Lemon Peel Bioferment, Hyaluronic Acid, WaterLock, and Protec SQ, specifically asking for advice on ingredient levels, additions, reductions, and overall formulation considerations.

Cosmetics Cream Skin Brightening Stability pH Adjustment Solubility
Posted by fonthip096
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In a formula containing Water, Satin Cream Maker, Copper Tripeptide 10x (3%), and DMAE Liquid (5%), the blue color of Copper Peptide disappears after adding DMAE. Does the Copper Peptide still retain its efficacy and intended results?

Cosmetics Color Changing Compatibility Stability Active Ingredient
Posted by austiname789
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Can Peel-Off Mask Base powder be used in a cream formula thickened with Polyacrylamide & C13-14 Isoparaffin & Laureth-7, and what percentage is needed for the peel-off effect?

Cosmetics Cream Film Former Compatibility Texture Usage Percentage
Posted by worawatjanmin.12
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What are the most effective ingredients for reducing upper lip lines (barcode lines) that can be used in cream, serum, or balm formulations?

Cosmetics Cream Serum Balm Wrinkle Reduction
Posted by themelaniedooley
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For car air fresheners with wooden cap diffusers, what alternative solvents can be used instead of alcohol to achieve good fragrance diffusion throughout the car while evaporating slowly to last 1-2 months? Alcohol evaporates too quickly, while water and oil don't diffuse the scent effectively through the wooden cap.

Cosmetics Diffuser Base Solvents Evaporation Control Long-lasting
Posted by wongyaiparn
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Seeking advice on an alcohol-based room spray formulation using aroma oil, DEB100, Polysorbate 20, fixative, and preservative, and comparing its effectiveness to simpler alternatives like aroma oil and ethyl alcohol or a pre-made base.

Cosmetics Spray Fragrance Solubility Stability Mixing Procedure
Posted by hninnei.kyaw1
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When registering cosmetics in Thailand using INCI names, if an ingredient is a mixture of multiple substances, is it necessary to declare the percentage of each individual component within the mixture for registration, or is it sufficient to declare the mixture as a whole?

Cosmetics Product Registration Ingredient Declaration Ingredient Mixture Amount Calculation
Posted by noppawan.etal
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I am interested in purchasing multivitamins or individual vitamins and minerals. I need to know which vitamins and minerals are heat-stable, as the user will need to microwave them at maximum power for 30 seconds to 1 minute before consumption.

Cosmetics Heat Stability Degradation Effectiveness Tablet Minerals
Posted by nudissaya
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Which type of Gellan Gum is recommended for use in plant-based milk to achieve a creamy texture and improve particle suspension?

Cosmetics Ready-to-drink Suspension Texture Thickener
Posted by nitteranon
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What causes salt-like or creamy residue around the bottle opening of a serum containing 5.5% Niacinamide and 0.75% Ethyl Ascorbic Acid, and how can this issue be resolved?

Cosmetics Serum Crystallization Compatibility Stability Solubility
Posted by 611438006
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