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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...
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...
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...
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...
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...
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...
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% *...
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?
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...
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...
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`...
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...
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*...
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...
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...
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...
Based on the principles of sunscreen formulation, specifically using physical sunscreens like Zinc Oxide and Titanium Dioxide: 1. What percentage combination of physical...
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...
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...
Can distilled water labeled as "dangerous drug" be used for mixing cosmetics? If it is essentially pure water, why is it classified as a "dangerous drug" by the FDA?