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Thickeners for Serum Formulation
How can I thicken a serum formulation? Can thickeners typically used for creams also be used, and what specific thickeners are recommended for serums to increase viscosity...
Semi-Permanent Hair Color Shampoo Formula and Usage
Is the formula 90% Semi-Permanent Hair Color Shampoo Base and 10% Semi-Permanent Hair Colorant correct for a gray hair covering shampoo? Do I need to add water or other...
Reducing Eye Irritation in Shampoo
What ingredients or bases can be added to a shampoo formula to reduce eye irritation and make it a "No-Tears" product?
HPMC Gelation Problem and Correct Method
How can I properly make a gel using HPMC 1% (120000cP)? I attempted to disperse it in room temperature water, adjusted the pH below 7 as recommended, and then heated it above...
Dissolving Protec™ OX in Cream/Serum Formulations
How can I effectively dissolve the oil-soluble antioxidant Protec™ OX, which requires heating to 70-80°C in the oil phase, for use in cream and serum formulations, especially...
Cosmetic Formulation Stability and Compatibility Issues
Seeking analysis of provided serum and cream formulations to identify the causes of observed stability and compatibility problems.
Liquid Hand Soap: Formulation for Easy Rinsing
How to formulate a liquid hand soap that rinses off easily and quickly without leaving a slippery residue?
Clear, Waterproof, Sweat-proof False Eyelash Glue Formulation
Could you provide a formulation for a clear false eyelash glue that is long-lasting, waterproof, and sweat-proof?
Coal tar Solubility in Surfactants
Which types of surfactants can dissolve or disperse Coal tar?
Using Color Changing Pigment (D&C Red 21) in Anhydrous Balm Stick
When using D&C Red 21 Color Changing Pigment in an anhydrous balm stick formula, is pH control necessary for the color change to occur? Also, what medium should be used to...
Balm Formulation Review, Preservatives, and Antioxidants
Review of a balm/stick formulation including Rice Bran Wax, Cocoa Butter, oils, and extracts, with specific questions about selecting between Mild Preserved Eco and...
Ingredients and pH Adjustment of Stabilized Vitamin C Serum
What are the ingredients of Stabilized Vitamin C (Natural-C Glycol™) Serum and how can its pH be adjusted to 3.5 for cosmetic product formulation?
Fixing Thin Cream Made with Silk Cream Maker
I made a cream using Silk Cream Maker at 4%, but it turned out very liquidy. I suspect high electrolyte content might be the cause. How can I increase the viscosity after the...
Formulation Assessment and Mixing Instructions for Glowing and Plump Skin Product
Can the provided list of ingredients, including Alpha Arbutin, Aloe Vera, Super-HYA™, Jojoba Oil, Witch Hazel, Allantoin, Vitamin E TPGS, Cica Sleeping Mask Base, Pure-TECA™,...
Evaluating a Skin Whitening and Brightening Formula
Based on the provided list of ingredients and their percentages, how effective is this formula for achieving skin whitening and brightening?
Mixing Vitamins and Supplements into Food and Drinks
Can all vitamins and supplements be mixed directly into food and drinks, or do some require specific preparation or processing beforehand?
Alternatives for Oil Gelling Agent in Clear Lip Gloss (Smell/Fumes Issue)
I am using Oil Thick™ Clear S to make clear gel lip gloss, but I experience a strong smell and fumes during mixing. Can you recommend alternative oil gelling agents for a clear...
Shampoo Formulation: Solubilizing Essential Oil and Foaming
In a shampoo formulation containing 15% Clarify-Wash and 2% essential oil in DI Water, what alternative solubilizer can be used for the essential oil instead of Flora Foam, and...
Liquid Foundation Stability and Mixing Issues with SPF Active
My Liquid Foundation SPF50 PA++ formula separated after mixing, with clear water on top. What are the possible reasons and solutions for this phase separation? Also, does the...
Usage and Properties of Skin Barrier Cream Base (Emulsifier Free)
Can Skin Barrier Cream Base (Emulsifier Free) be used at 100% concentration for dry areas like heels, elbows, and knees, or should it be mixed with other ingredients? Does this...