Browse Questions and Answers

I have formulated a serum/gel for my mother who has mature, dry, sensitive skin with redness, acne, and wrinkles (including deep ones). I would like to know if this formula is...

Regarding an AHA Gel product containing 5% Glycolic Acid intended for use on melasma, should this product be washed off after application or can it be left on?

I'm confused about how to calculate ingredient percentages for cosmetic formulations. When a formula lists a percentage for an ingredient (like 4%), does it mean percentage by...

I would like to change the ingredient that helps lift the cheek area in my serum formulation. Previously, I used: * Anti-Aging: Matrixyl™ 3000 (Peptide Matrixyl) 8% Can I...

Based on my skin type (very oily, acne-prone, large pores, some wrinkles), I need formulation suggestions for two products: 1. A sunscreen with BB properties, specifically...

When using `Xanthan Gum (ชนิดใส)` in shampoo formulation, I encounter issues with air bubbles, the product not being clear/having color changes, and difficulty achieving a...

I am developing a water-based body treatment formula with the following ingredients and percentages: * **Lactic Acid (AHA) 15%** * **Urea 15%** * **Vitamin B3 (Niacinamide)...

I have developed two serum formulations and would like expert review and recommendations. I am also unsure about the appropriate amount of Allantoin to use and how to test the...

I am developing a Vitamin C serum formulation, inspired by the Skinceuticals C E Ferulic type. I have a few questions regarding ingredients and product properties: 1. Can wine...

I am formulating a skincare product for mature, combination skin with deep wrinkles and sagging using an Aloe Vera Gel base. My initial ingredient list includes: * Glucosamine...

I have a cream formulation with the following ingredients: * Aloe extract 2% * Allantoin 0.5% * Vitamin B3 3% * Liquid beta glucan 5% * Resveratrol 3% * Moist72 2% *...

What is the suitability of using the following ingredients in an eye cream formulation, particularly regarding their recommended usage percentages for the eye area? *...

I want to make a serum for personal use. I have combination skin that is almost dry, with some dark spots and slightly enlarged pores. I want a serum that also focuses on...

I have an oil-based hand cream formula (Petrolatum base) and want to add moisturizing ingredients to improve it for very dry and rough hands. If I add water-soluble...

What ingredients are recommended for formulating an effective and safe skin whitening body cream? Please provide recommended ingredients, their mechanisms of action, stability,...

I'm interested in using Copper Peptide for acne scars. Could you please provide detailed information on: * Its effectiveness for treating acne scars, including newer and older...

Are the results the same when using the combination of **Matrixyl 3000** with **Argireline** compared to the combination of **Pep®-Coll** with **Syn®-syn**?

Does **Ascorbyl glucoside** cause skin dryness similar to **l-ascorbic acid**?

What is the typical fatty acid profile (Oleic and Linoleic acid ratio) for Grape Seed Oil, specifically the NaturalProfile™ Grape Seed Oil (Cold-Pressed), and is a Certificate...

Regarding my Vitamin C formulation: My first formula, which included L-Ascorbic Acid with water, Cyclomethicone, Silicone Gel, and Sepiplus 400, did not turn yellow quickly....