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Eyelash Gel & Liquid Facial Soap Formulation Issues (Texture, Viscosity, Foaming)
I have two formulation questions: 1. **Eyelash Gel:** I made an eyelash gel with the following formula: * Long lash 9% * Pro polymer 1.5% * Phenoxyethanol 0.5% * Water...
Formulating Long-Lasting Liquid Matte Lipstick with Pigment Stability
I want to create a liquid matte lipstick formulation similar to popular brands, aiming for a creamy, smooth, lightweight, and long-lasting texture. My main concern is...
Spilled Vitamin C powder when mixing serum kit
When mixing a serum kit, I accidentally spilled some Vitamin C powder on the table. Can I collect the spilled powder and put it back into the mixing bottle? What is the...
Questions about Homemade BHA Toner Formulation, Usage, and Ingredient Compatibility
I have some questions about a homemade BHA Toner formula, especially concerning ingredients, usage, and compatibility with other actives like Azelaic Acid. 1. Can the...
Cream Formulation: Mixing Time and pH for a Corrected Recipe
Regarding the corrected cream formulation steps provided: **Phase A:** Heat Macadamia Oil + Shea Butter to 60°C until Shea Butter melts. Cool to room temperature. Add...
Adding PHA/LHA to Cream Base and Effectiveness for Oily Skin/Blackheads
I have questions about adding active ingredients to a cream base and their effectiveness for specific skin concerns: 1. Can I add ingredients like PHA or LHA to a pre-made...
Clarification on Gentleness: Butylene Glycol vs. Propylene Glycol
I found information on an external website claiming that Butylene Glycol is less gentle than Propylene Glycol, which seems to contradict information I've seen elsewhere. Could...
Sunscreen Formulation Feedback and Cost Reduction
I have two sunscreen formulations and some questions: 1. **Face Sunscreen Formula:** * SPF Protect Ultra 20% * Olive oil 5% * Homosalate 10% * Light Cream Maker 2% *...
Eye Gel Spoilage and Irritation due to Lack of Preservative
My homemade eye gel spoiled quickly (within 2 days) and developed a "ตุๆ" smell. When I used it, it caused eye swelling and bumps. Why did this happen?
Formulating a Clear Moisturizing Serum with Hyaluronic Acid and Other Actives
I would like to formulate a clear moisturizing serum. 1. When Hyaluronic acid standard is dissolved in water according to the instructions, what is the resulting gel like? Is...
Using Tester Formulation for Commercial Sale and FDA Registration
Can a "tester" formulation be used for commercial sale and FDA registration? What is the purpose of a tester formulation, and when should FDA registration be pursued for a...
Liquid Facial Soap Formulation: pH, Viscosity, and Ingredient Questions
I am formulating a liquid facial soap using `Plantacare 1200` (Lauryl Glucoside) and `Plantacare 2000` (Decyl Glucoside). I have a few questions: 1. If I use `Decyl Glucoside`...
How to determine which ingredients can be removed from a formulation
I want to understand how to determine which ingredients in a cosmetic formulation are essential and cannot be removed, and which ones might be optional. What are the different...
Dermarolling and Skincare Ingredients for Acne Scars and Oily Skin
I have questions about using skincare ingredients with dermarolling for acne scars and managing oily, acne-prone skin: 1. Is it recommended to use Rose Hip Oil directly *while*...
Formulating with Pro Niacin and Activated Resorcinol
I would like to combine Pro Niacin (Myristyl Nicotinate) and Activated Resorcinol (4-butyl Resorcinol) in a cosmetic formulation. Can you provide a suitable formula and...
Glycolic Acid Formulation for Melasma: pH, Texture, and Ingredients
I am developing a formulation for melasma treatment using the following ingredients: * Glycolic Acid * Aloe Vera Extract (10:1) 3% * Honey * Water * Centella Asiatica Extract...
Formulating a Lightweight Serum for Uneven Skin Tone with Niacinamide and Vitamin C
I am trying to formulate a lightweight, non-sticky serum to even out skin tone using ingredients including Niacinamide and Vitamin C. 1. Will using `Ethoxydiglycol` as a...
Sunscreen Formulation: Achieving SPF 40-50 with Low Titanium Dioxide and Understanding Synergistic Effects
Based on the principles of sunscreen formulation, specifically using physical sunscreens like Zinc Oxide and Titanium Dioxide: 1. What percentage combination of physical...
Why are SPF claims limited to 50+? Is SPF 100 significantly better?
Regarding the regulation that limits SPF claims on product labels to SPF 50+ in many countries, including potentially Thailand (อย.), why is this limitation in place? Does...
Reviewing Facial Cleansing Cream Formula for Oily Skin & Clogged Pores
I have revised my facial cleansing cream formula intended for oily skin, makeup and sunscreen removal, and addressing clogged pores. I would appreciate a final review and...