Education

Understanding INCI Names: A Beginner's Guide

InciSister Team
March 15, 2025
5 min read

Have you ever picked up a cosmetic product and felt completely lost looking at the ingredient list? You're not alone! Those long, complicated names like "Sodium Lauryl Sulfate" or "Dimethicone" can seem like a foreign language. But understanding INCI (International Nomenclature of Cosmetic Ingredients) names is easier than you think, and it's the key to making informed choices about your beauty products.

What Are INCI Names?

INCI names are standardized ingredient names used worldwide. They ensure that no matter where you buy a product, the ingredients are listed in the same way. This system was created to make ingredient lists consistent and understandable across different countries and languages.

Why They Matter

When you understand INCI names, you can: - Identify ingredients that might irritate your skin - Avoid allergens if you have sensitivities - Make informed choices based on your skin type - Compare products more effectively

Common INCI Names Decoded

Let's break down some common ingredients you'll see:

**Water (Aqua)**: The most common ingredient in cosmetics. It's listed as "Aqua" in INCI terminology.

**Glycerin**: A humectant that helps your skin retain moisture. Great for dry skin!

**Dimethicone**: A silicone that creates a smooth, silky feel. Generally safe but can feel heavy for some skin types.

**Sodium Lauryl Sulfate (SLS)**: A foaming agent. Can be drying or irritating for sensitive skin.

**Parabens**: Preservatives that prevent bacteria growth. The subject of much debate, but generally considered safe in small amounts.

How to Read an Ingredient List

Ingredients are listed in descending order by concentration. The first few ingredients make up the majority of the product, while those at the end are present in very small amounts.

Tips for Beginners

1. **Start with the first 5 ingredients** - These make up most of the product 2. **Look for your known allergens** - If you know certain ingredients irritate you, scan the list 3. **Use tools like InciSister** - Our free tool can help you understand what each ingredient does 4. **Don't be intimidated** - With practice, you'll start recognizing common ingredients

Making It Work for You

Remember, there's no "perfect" ingredient list. What works for someone else might not work for you. The key is understanding what you're putting on your skin and making choices that align with your skin type, concerns, and values.

Start by analyzing a few products you already use with InciSister. You'll be surprised how quickly you start recognizing ingredients and understanding what they do!

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