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Using Vitamin C on Sensitive Skin After AHA Treatment
My skin is currently very sensitive and thin due to using a strong AHA treatment, experiencing peeling and irritation. Is it safe or advisable to use fresh Vitamin C every...
Adding Additives (EDTA, BHT, BHA) to Cold Process Soap Bar and Stability Issues
I have the following cold process soap bar formulation: * **Expected Soap Weight:** Approximately 450 g * **Ingredients:** * Coconut Oil: 300 g * Soda Ash Flakes 98%: 50.76 g *...
Spot Treatment Gel for Exfoliation and Dark Spots
I am developing a **spot treatment gel formula** to accelerate skin exfoliation for dark spots from scars and acne. I would like to know the appropriate concentration for...
DIY Skin Brightening and Stretch Mark Cream Formulation & Manufacturing Questions
I am developing a skincare cream for personal use, aiming for skin whitening, reducing stretch marks, improving skin smoothness, and slight firming. Based on previous feedback,...
DIY Herbal Cleansing Toner Recipe
Could you provide a DIY recipe for a herbal cleansing toner, including recommended ingredients like Witch Hazel and Calendula extract, their usage percentages, and instructions?
Sunscreen Gel Formulation and Technical Questions
A user is asking several questions about formulating a sunscreen gel with the following ingredients: * Water * MatteSilica™ * Pro Polymer * Titanium Dioxide Nano EasyDisperse™...
Suitability of Soy Lecithin, Beeswax, Xanthan Gum in High Water Formulation
I have a formula with 4-5% oil and 78% water. Is **Soy Lecithin** suitable for emulsifying this formula, or does it require a very high amount? Can **Beeswax** or **Xanthan...
Formulating Beta Glucan for Sensitive Skin: Toner vs. Gel/Cream
I would like to formulate a product using Beta Glucan (Saccharomyces cerevisiae extract) for sensitive skin. Can I make it as a toner? If not, what other product forms like gel...
Gel Base Formulation, Stability, and 1000g Batch Calculation
I would like a formula to create a stable gel base (`สารตั้งตัน`) that does not revert (`ไม่คืนตัว`). I plan to produce a 1000g batch. Could you please provide the formula and...
Formulation Issues: Solubility, Texture, and Separation in Melasma Serum
I am developing a serum formulation for melasma treatment using **Silky Serum Base Plus** at 50% concentration. I also included the following ingredients: * Tranexamic Acid *...
Stability of Vitamin C (L-Ascorbic Acid) with Ferulic Acid and Vitamin E
Regarding the general formulation, how effective is the combination of Ferulic Acid and Vitamin E in helping to reduce the oxidation of Vitamin C (L-Ascorbic Acid)?...
Adding Preservative and Mixing Method for Silicone-Based Serum, Plus Ordering Process
I have a serum formula containing water-soluble ingredients like REGU®-AGE, Aloe Vera Extract, Vitamin B3, and WhiteCumin™. The expert mentioned it appears to be a...
Acne Clearing Clay Mask Formula
Could you provide a formula for an acne face mask, specifically a clay mask, that helps with dissolving clogged pores and reducing skin oiliness? I'm interested in ingredients...
Warming Sensation in Cleanser and Sprayability of Hyaluron Lotion
I have two questions regarding cosmetic formulations: 1. I tried making a mild facial cleanser for sensitive skin based on the formula found at...
Titanium Dioxide in Soap & Wash-Off Lotion: Whitening & Sun Protection Claims
Following a discussion about misleading cosmetic claims regarding products showing a temporary whitening effect after washing off, I have some questions based on common...
Improving Melasma Formula: Adding Gentle & Effective Ingredients
I am developing a formula for melasma. My previous attempt caused acne, possibly due to strong ingredients like Activated Resorcinol. My current base formula includes Pro...
Formula Review for Anti-Aging, Lifting, and Moisturizing Cream (Combination Skin)
I would like to request a review and suggestions for improving my cream formula. My goal is to create an anti-aging cream that helps reduce and prevent wrinkles, provides a...
Review of Beginner Lotion Formula with Whitening & Extracts
As a beginner, I would like to ask for a review of the lotion formula I intend to make. Please check if the formula is suitable and provide any additional suggestions. Here is...
Shampoo Formulation Issues: Precipitation and Hair Stiffness
I am formulating a shampoo using natural extracts, specifically Kaffir Lime and Butterfly Pea. I encountered two main issues: 1. The natural extracts precipitate in the...
Yellow Stains from Anti-sweat and White Cast in Sunscreen
I have two questions: 1. Is it true that anti-sweat ingredients can cause yellow stains on white clothes? If so, how can I prevent or remove them? 2. My sunscreen formula uses...