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The Formuley Journal

The thinking
behind beauty.

Perspectives on formulation, ingredient research and bringing beauty products to life.

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Cold Process Soap Troubleshooting: 12 Common Problems Solved

Fix the most common cold process soap problems including false trace, soda ash, glycerin rivers, DOS, and more with causes and solutions.

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Cosmetic Preservatives: How to Choose the Right One

A formulator's guide to choosing cosmetic preservatives. Covers broad-spectrum systems, pH requirements, usage rates, challenge testing, and common mistakes.

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EU Cosmetics Regulation: A Guide for US Indie Brands Going International

How US indie cosmetic brands can sell in Europe: Responsible Person, CPNP registration, CPSR, labeling, banned ingredients, and a step-by-step roadmap.

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FDA Cosmetic Labeling Requirements: Complete Guide

Everything cosmetics professionals need to know about FDA cosmetic labeling, INCI naming, MoCRA updates, allergen disclosure, and common compliance mistakes.

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GMP for Small Cosmetic Manufacturers: A Practical Guide

A complete guide to cosmetic Good Manufacturing Practices for small and home-based makers, covering MoCRA requirements, ISO 22716, and practical setup steps.

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HLB System Explained: A Practical Guide to Stable Emulsions

Master the HLB system for creating stable cosmetic emulsions. Covers required HLB values, emulsifier blending calculations, and troubleshooting for cosmetic formulators.

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Natural vs Synthetic Ingredients: What Formulators Need to Know

A science-based comparison of natural and synthetic cosmetic ingredients. Covers performance, cost, stability, regulations, and how to choose wisely.

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How to Calculate Your True Product Cost and Profit Margin

Learn how to calculate the real cost of your handmade cosmetics and set profitable prices. Covers COGS, hidden costs, overhead, and pricing strategies for formulators.

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How to Calculate Soap Lye (SAP Values Explained)

Learn how to calculate lye for cold process soap using SAP values. Covers NaOH vs KOH, water ratios, superfat, oil properties, and common mistakes.

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