คำถาม-คำตอบ

What ingredients can be added to a clear glycerin base to make the skin soft? Please suggest specific ingredients.

Based on the previous discussion about using 20-30% fragrance oil in a diffuser base and adjusting with [Dipropylene Glycol], could you provide a detailed formula for making...

I made a Vitamin C + Beta Glucan serum for personal use and measured the pH at 2.3. I would like to ask if it can be used on the face. Please advise. **Formula:** * DI water...

I was making a cream and initially added Light Cream Maker at 1%. After mixing, the cream didn't emulsify properly, so I added a bit more (around 0.5%-1.0%). This made the...

What is the suitable pH range for cosmetic products when using aluminum packaging? Why is it important to stay within this range?

I made a homemade silicone-based sunscreen, but it seems to be causing clogged pores and acne, even though I cleanse thoroughly. Why is this happening, and what are some...

I previously ordered Stabilized Vitamin C (Natural-C Glycol™) and mixed it with mica powder because I thought it looked nice. When I started applying it, I felt that my face...

Can I use the Vitamin C E Ferulic Premix kit formula to register my own brand with the FDA? What should I do to avoid copyright issues with original patented formulas like...

I have a skin whitening cream formula using Activated Resorcinol. Could you please review the formula and advise on the mixing procedure for the oil phase ingredients?...

I have a list of ingredients and want to create a similar formula, but I do not want to use water as a solvent. I need advice on how to modify the formula and what alternatives...

I have developed a formulation for reducing dark circles and wrinkles around the eyes and crow's feet. I would like to know if this formulation is effective and if my mixing...

Regarding the DMAE Skin Tightening Gel formula, I need a serum formula designed for sensitive skin that addresses wrinkles, lifting, hydration, and strengthening the skin...

How to create a fragrant spa milk bath formulation that turns milky white when added to water? What are the key ingredients and their functions?

I have developed a shampoo formula and would like to know if it is too strong. Please review the formula below and advise if any adjustments are needed. Additionally, I would...

Can a cream containing 0.5% Retinyl Palmitate be used as both a day cream and a night cream? Are there any concerns regarding photosensitivity when used during the day?

I have questions about adding AHA and Alpha Arbutin to bar soap, especially concerning claims like "AHA 80%". 1. If adding AHA and Alpha Arbutin to a bar soap base, is it...

I want to create a long-lasting, dark-colored, semi-lotion body foundation. I understand that achieving a stable product with good coverage and wear properties is more complex...

I purchased a clear, SLS/SLES-free glycerin bar soap base to make facial soap for sensitive, acne-prone skin. I have the following questions: 1. Is there a foaming agent...

Can Zinc PCA be used together with Azelaic Acid? Also, regarding the concentration of Azelaic Acid for acne treatment, what is the appropriate percentage to use, considering...

Why doesn't ceramide dissolve easily in water, especially when taken directly from the refrigerator? What are the correct ways to mix ceramide into a formulation?