How to Read Cosmetic Ingredient Labels: A Simple Guide

How to Read Cosmetic Ingredient Labels: A Simple Guide

By Hairstory

There's a lot more on a cosmetic label than a list of ingredients. Learn why the order matters, what those long INCI names mean, and what the little symbols on the back are telling you, using a bottle of New Wash as the example.

Published on October 06, 2026 — 5 min read

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If you walk into a grocery store, you'll probably see people reading ingredient labels. Maybe someone’s scanning a bottle of salad dressing or a box of cereal. Maybe they’re looking for calories, sodium or additives. Nowadays, a lot of us read labels looking for synthetic ingredients in our food and in our beauty products. Whether that be monosodium glutamate and Red 40 or silicone and detergents like sodium lauryl sulfate.

The real question is: Do you know how to read everything required on packaging? There's a lot more information on these labels than just ingredients. Especially cosmetic ingredient labels. Let's take a deep dive.

Where to Find Your Ingredient List

Every skin care, makeup or hair product should have its full ingredients listed on its packaging per FDA guidelines. It's typically found on the back of the product, a peel-away label or an accordion-style label.

All of our ingredients are found on the peel-away sticker label.

Ingredient Order and Naming Rules

Cosmetic ingredients are typically listed in order of predominance, so the ingredient that makes up the highest percentage is listed first. In other words, ingredients are listed in descending order of concentration, starting with the highest concentration of an ingredient and ending with the lowest concentration.

In addition, ingredient names must be listed as their recognized names in the International Nomenclature Cosmetic Ingredient Dictionary and Handbook. This was developed in 1973 by the Cosmetic, Toiletry, and Fragrance Association (CTFA), now known as the Personal Care Products Council (PCPC) to create an international, transparent and standardized naming system for cosmetic ingredients. The International Nomenclature Cosmetic Committee (INCI) which includes scientific experts create and manage these names.

Reading New Wash's Label

So let's look at a bottle of New Wash.

The first five ingredients are important as they're the primary agents of the product. The first five of New Wash are Water, Aloe Vera Juice, Glycerin, Cetearyl Alcohol and Stearamidopropyl Dimethylamine.

While a lot of the INCI names are long and technical, we've broken them down for you on our ingredient glossary. For example, the Cetearyl Alcohol found in New Wash is a fatty alcohol derived from coconut or palm oil that locks in moisture. Stearamidopropyl Dimethylamine found in New Wash is an oil-based conditioning agent used as a silicone alternative.

Trade Secrets and Fragrance

Some companies have trade secret ingredients which are essentially proprietary components that companies legally protect from the public to maintain a competitive advantage. We don't have any trade secret ingredients.

Sometimes fragrance or perfume ingredients are listed as is. On our list, you can find a list of the essential oils we used to make the product fragrant.

What About Phenoxyethanol?

Some of the lowest concentrated ingredients are found at the bottom of ingredient lists. One of our most controversial ingredients is Phenoxyethanol, a preservative to extend shelf life and prevent overgrowths of harmful bacteria. The level in our products is well below 0.001%, which not only meets but exceeds global safety standards set by the EU, the US FDA, and other international regulatory bodies.

Our Certifications

While companies aren't legally required to list their product certifications, we choose to. We're proudly vegan, Leaping Bunny Certified, biodegradable, detergent-free, sulfate-free, phthalate-free, paraben-free, silicone-free and 1% for the Planet.

Decoding the Symbols on the Back

A few more symbols show up on New Wash's label, and on most cosmetic packaging:

  • Period After Opening (PAO): the open-jar icon with a number and "M" tells you how long a product is good for once opened. New Wash's PAO is on the back, near the QR code. This symbol is required under EU cosmetic labeling regulation.
  • The hand-and-open-book icon means "refer to insert," indicating there's more ingredient or usage information in an enclosed leaflet or sticker that wouldn't fit on the primary label.
  • The three arrows in a triangle mean the packaging is recyclable.

While ingredient labels seem like an easy read at first glance, there’s more than meets the eye. Now you know the wordy list reflects a descending order of concentration and the little symbols and images you see reflect certifications and instructions. The next time you’re curious about an ingredient, figure out where it’s located on the list, survey the label itself and make a decision.

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The information in this article is for educational purposes only and is not intended as medical advice. Always consult a board-certified dermatologist or qualified healthcare provider if you have concerns about your hair or scalp health.

Frequently Asked Questions

  • Where can I find the ingredient list on a cosmetic product?
    Per FDA guidelines, every skin care, makeup, and hair product should list its full ingredients on its packaging. The list is typically on the back of the product, on a peel-away label, or on an accordion-style label. Hairstory lists all ingredients for products like New Wash on a peel-away sticker label.
  • What order are ingredients listed in on cosmetic labels?
    Cosmetic ingredients are listed in order of predominance, meaning descending order of concentration. The ingredient that makes up the highest percentage of the formula comes first, and the one with the lowest concentration comes last. That's why the first few ingredients tell you the most about what a product is made of.
  • What are INCI names on cosmetic ingredient labels?
    INCI names are the standardized ingredient names recognized in the International Nomenclature Cosmetic Ingredient Dictionary and Handbook. The system was developed in 1973 by the Cosmetic, Toiletry, and Fragrance Association, now the Personal Care Products Council, to create a transparent, international naming standard. A committee of scientific experts creates and manages these names, which is why ingredients often appear under long, technical names.
  • What are the main ingredients in New Wash by Hairstory?
    The first five ingredients in New Wash are Water, Aloe Vera Juice, Glycerin, Cetearyl Alcohol, and Stearamidopropyl Dimethylamine. Cetearyl Alcohol is a fatty alcohol derived from coconut or palm oil that locks in moisture. Stearamidopropyl Dimethylamine is an oil-based conditioning agent used as a silicone alternative. Hairstory breaks down these technical names in its ingredient glossary.
  • What are trade secret ingredients in beauty products?
    Trade secret ingredients are proprietary components that companies legally protect from public disclosure to maintain a competitive advantage. Hairstory does not use any trade secret ingredients. Its labels list the essential oils used to make each product fragrant.
  • Why is phenoxyethanol in hair care products?
    Phenoxyethanol is a preservative that extends shelf life and prevents overgrowth of harmful bacteria. It appears near the bottom of ingredient lists because it's used at very low concentrations. Hairstory uses phenoxyethanol at levels that meet and exceed global safety standards set by the EU, the US FDA, and other international regulatory bodies.
  • What do the symbols on the back of cosmetic packaging mean?
    The open-jar icon with a number and an M is the Period After Opening (PAO) symbol, which shows how many months a product stays good once opened; it's required under EU cosmetic labeling regulation. A hand-and-open-book icon means refer to insert, signaling more ingredient or usage information in an enclosed leaflet or sticker. Three arrows in a triangle mean the packaging is recyclable. On New Wash, the PAO symbol sits on the back near the QR code.
  • Do cosmetic companies have to list certifications on their labels?
    No, companies aren't legally required to list product certifications, but Hairstory chooses to. Its products are vegan, Leaping Bunny Certified, biodegradable, detergent-free, sulfate-free, phthalate-free, paraben-free, silicone-free, and part of 1% for the Planet.

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