How to Read a Skincare Label: What the Ingredients in Your Soap and Lotion Actually Mean
Turn over almost any bottle of lotion or bar of soap and you'll find an ingredient list that looks like it belongs in a chemistry textbook. Long scientific names, strings of words ending in "-ate" or "-yl" or "-oxide," references to things you'd expect to find in a lab rather than your shower.
Here's the thing: most of those names are ordinary, skin-friendly ingredients in disguise. The scientific naming system used on cosmetic labels -- called INCI, which stands for International Nomenclature of Cosmetic Ingredients -- requires that ingredients be listed using standardized Latin and chemical names regardless of how simple or natural the actual ingredient is. Olive oil becomes "Olea Europaea Fruit Oil." Coconut oil becomes "Cocos Nucifera Oil." Shea butter becomes "Butyrospermum Parkii Butter." In the U.S. Under the Fair Packaging and Labeling Act (FPLA), the US Food and Drug Administration (FDA) requires cosmetic ingredients to be listed by their "common or usual names." While the FDA formally recognizes the International Nomenclature of Cosmetic Ingredients (INCI) dictionary for chemical names, it strictly prohibits using standalone international INCI alternatives for certain categories, such as botanicals and water so that you can easily identify natural botanical ingredients.
None of that means the ingredient is complicated or concerning. It just means there's a naming convention you haven't been taught -- yet. Once you learn it, reading a skincare label becomes genuinely easy, and you'll be able to tell within about thirty seconds whether a product has simple, clean ingredients or a list full of things worth questioning.
Here's how to do it.
Rule One: Order Matters
Cosmetic ingredient lists are required by the FDA to be listed in descending order of concentration. The ingredient present in the largest amount comes first; the one present in the smallest amount comes last.
This one rule is the most useful tool you have when evaluating a product.
It means that if "water" is the first ingredient in your lotion, the product is mostly water -- which is fine and expected, since emulsions need water. But if a conventional body wash lists "sodium laureth sulfate" as the second ingredient, that stripping detergent makes up a significant portion of what you're putting on your skin.
It also means that when a product markets itself as "with shea butter" or "with avocado oil" but those ingredients appear at the very bottom of a long list, they're likely present in such tiny amounts that they contribute more to the marketing claim than to what the product actually does.
A clean, well-formulated product tends to have its beneficial ingredients high on the list. When you pick up one of our bars or lotions and see coconut oil, olive oil, shea butter, and avocado oil appearing in the first several ingredients, that tells you something meaningful: those are the ingredients doing most of the work.
Rule Two: The INCI System Makes Simple Things Sound Complicated
The International Nomenclature of Cosmetic Ingredients system was designed to create a universal standard for ingredient labeling across countries. It's useful for regulatory consistency, but it has an unintended side effect: it makes perfectly natural, recognizable ingredients look intimidating.
Here are some of the most common ones you'll encounter on natural skincare labels and what they actually are:
Butyrospermum Parkii Butter -- shea butter. Named after the Latin name for the shea tree.
Cocos Nucifera Oil -- coconut oil.
Olea Europaea Fruit Oil -- olive oil.
Helianthus Annuus Seed Oil -- sunflower oil.
Persea Gratissima Oil -- avocado oil.
Aloe Barbadensis Leaf Juice -- aloe vera. You'll see this in lotions, creams, and other leave-on products.
Simmondsia Chinensis Seed Oil -- jojoba oil.
Argania Spinosa Kernel Oil -- argan oil.
Tocopherol -- vitamin E.
Aqua -- water.
Ricinus Communis Seed Oil -- castor oil.
None of these are cause for concern. They're all plant-derived, widely used, and exactly what they sound like. The Latin names follow a consistent pattern: the species name of the plant, followed by the part of the plant the ingredient comes from (seed, fruit, leaf, kernel, root), followed by the type of ingredient it is (oil, butter, extract, juice).
Once you see the pattern, you can decode most botanical INCI names on your own.
Rule Three: Understand What Happens to Soap Ingredients
Bar soap ingredient lists look different from lotion ingredient lists, and understanding why matters.
When oils are made into cold-process soap, they go through a chemical reaction called saponification. The oils combine with sodium hydroxide (lye) and water, and the resulting chemical transformation produces soap molecules and glycerin. Neither the original oils nor the lye remain unchanged in the finished bar -- they become something new.
On a soap label, this can be listed two ways. Some makers list the raw ingredients that went into the soap (olive oil, coconut oil, sodium hydroxide, water). Others list the resultant ingredients -- what those things became after saponification. In the resultant system, saponified olive oil becomes "Sodium Olivate." Saponified coconut oil becomes "Sodium Cocoate." Saponified shea butter becomes "Sodium Shea Butterate."
Both are legal and accurate. Both are describing the same bar of soap. The only difference is the labeling approach.
This is why you might see "Sodium Hydroxide" on a natural soap label and wonder why a chemical known as lye is listed. The answer is that it's required by law to list raw materials used in production, even when those materials have been fully transformed in the finished product. There is no active lye in a properly made, fully cured bar of soap.
We've covered this in more detail in our post on decoding soap ingredient labels, which is worth reading if you want to go deeper on bar soap specifically.
Rule Four: Know the Ingredients Worth Watching For
Not every ingredient in every product is worth concern, but there are a handful that show up frequently in conventional skincare and that many people with clean-ingredient preferences choose to avoid.
Fragrance / Parfum: One of the most important things to understand. When you see "fragrance" or "parfum" on an ingredient list, it can represent a complex blend of dozens of undisclosed chemical compounds -- because fragrance formulas are legally protected trade secrets. This single ingredient can include synthetic chemicals, potential allergens, and phthalates without any of them being individually listed.
This is different from products that list specific essential oils (lavender oil, peppermint oil, eucalyptus oil) -- those are disclosed by name and are exactly what they say. The concern is with the blanket term "fragrance" or "parfum," which offers no transparency.
For people with sensitive skin or fragrance sensitivities, this distinction matters a great deal. It's one of the reasons we list every scent ingredient specifically rather than hiding it under "fragrance."
Parabens: Preservatives commonly used in water-based products (lotions, body washes, shampoos). They appear on labels as methylparaben, ethylparaben, propylparaben, and butylparaben. Many people choosing cleaner skincare specifically look to avoid these, which is reflected in the growing number of "paraben-free" products on the market.
Sulfates (SLS and SLES): Sodium Lauryl Sulfate and Sodium Laureth Sulfate are the foaming agents responsible for the dense lather in most conventional body washes and shampoos. They're effective cleansers but can be stripping for sensitive or dry skin, and they're among the first ingredients people who switch to natural skincare leave behind.
PEGs: Polyethylene glycol compounds show up in a wide range of product types and serve various purposes. They appear on labels as PEG followed by a number (PEG-40, PEG-100 Stearate). They're synthetic and petroleum-derived, which leads many clean-beauty consumers to look for alternatives.
Phthalates: These are plasticizing chemicals often used in synthetic fragrance formulas and some other cosmetic applications. They're rarely listed individually on ingredient labels because they're typically part of the "fragrance" blend.
The good news is that avoiding most of these doesn't require memorizing a long list of names. A simpler strategy works for most people: look for short ingredient lists made up of recognizable plant-based ingredients. Short lists with plant-derived ingredients are generally a good sign. Very long lists with many entries you can't identify are worth a closer look.
Rule Five: Apply the "Would I Recognize This?" Test
Here's a practical shortcut that works well in most cases.
Look at the ingredient list and ask: would I recognize the majority of these ingredients as real things? Plant oils, butters, extracts, water -- these are all real, recognizable things that happen to have Latin names. If the list is full of entries that sound entirely synthetic or functional (emulsifiers, polymer thickeners, synthetic preservatives, artificial dyes) with no recognizable plant-based core, that tells you something about what kind of product you're looking at.
This isn't about achieving a list of only five ingredients -- good formulation sometimes requires ingredients that support stability, texture, and preservation. It's about whether the backbone of the formula is plant-based and recognizable, or synthetic and functional.
What This Looks Like in Practice: Our Products as Examples
The best way to understand how to read a label is to practice on real ones. Here are three of ours.
Simply Unscented Bar Soap
Ingredients: Organic Sunflower and Olive Oil Blend, Water, Coconut Oil, Shea Butter, Sodium Hydroxide, Organic Palm Oil
Six ingredients. Every one of them is recognizable as a real thing. The first ingredient is an organic oil blend -- meaning those oils make up the majority of the bar. Coconut oil and shea butter follow, bringing lather quality and skin-conditioning properties respectively. Sodium hydroxide is listed because it was used in production and is required to appear, even though it no longer exists as lye in the finished bar. Palm oil rounds out the base.
This is about as clean and short as a soap ingredient list gets. There's nothing on this list that requires explanation or justification. If you're just learning to read labels, this is a good place to start -- it sets a useful benchmark for what a genuinely simple formula looks like.
Shop Simply Unscented Bar Soap
Ultra Hydration Lotion
Key ingredients: Water, Coconut Oil, Grape Seed Oil, Avocado Oil, Abyssinian Oil, Sweet Almond Oil, Emulsifying Wax, Stearic Acid, Phenoxyethanol (and) Caprylyl Glycol, Fragrance
Lotions are more complex than bar soap because they're emulsions -- they require an emulsifier to hold the oil and water phases together, and they require a preservative to prevent the growth of bacteria and mold in a water-containing product.
What to notice here: the plant oils (coconut, grape seed, avocado, abyssinian, sweet almond) appear in the top portion of the list, meaning they make up a meaningful percentage of the formula. The emulsifying wax and stearic acid are functional ingredients that give the lotion its texture and stability -- they're not harmful, just structural. Phenoxyethanol and Caprylyl Glycol are the preservative system, needed in any water-based product to keep it safe over its shelf life. And "Fragrance" refers to the scent -- in our scented versions, this is derived from fragrance oils; our Simply Natural option removes fragrance entirely for those who prefer it.
The key takeaway: a lotion ingredient list will always be longer than a soap ingredient list because the formulation is more complex. That's not a red flag. What matters is whether the functional ingredients are doing a legitimate job and whether the beneficial ingredients are genuinely present in meaningful amounts.
HydraShea Body Cream
Key ingredients: Water, Aloe Barbadensis (Aloe Vera) Leaf Juice, Butyrospermum Parkii (Shea) Butter, Cocos Nucifera (Coconut) Oil, Helianthus Annuus (Sunflower) Seed Oil, Glycerin, and supporting emulsifiers and preservatives
This label uses INCI names alongside common names in parentheses, which is a labeling choice some makers use to help consumers identify ingredients more easily. It's not required by law, but it's a transparency-oriented practice.
What to notice: Aloe Vera Leaf Juice appears near the top of the list, meaning it makes up a significant portion of the formula -- you're not getting trace amounts of aloe for the marketing claim, you're getting a product where aloe is a foundational ingredient. Shea butter follows, using its INCI name (Butyrospermum Parkii) but with the common name helpfully included. Coconut oil and sunflower oil continue the plant-based pattern.
Glycerin, which appears frequently on clean skincare labels, is a humectant -- it draws moisture toward the skin and is an entirely benign and beneficial ingredient, often derived from plant oils.
A Quick Reference: Common Ingredients Translated
Here's a condensed reference you can bookmark.
In bar soap:
Sodium Olivate = saponified olive oil
Sodium Cocoate = saponified coconut oil
Sodium Shea Butterate = saponified shea butter
Sodium Sunflowerate = saponified sunflower oil
Sodium Hydroxide = lye (used in production, not present in finished bar)
Aqua = water
Glycerin = a natural byproduct of saponification, retained in the bar
In lotions and creams:
Aqua = water
Butyrospermum Parkii = shea butter
Cocos Nucifera = coconut oil
Helianthus Annuus = sunflower oil
Persea Gratissima = avocado oil
Aloe Barbadensis = aloe vera
Tocopherol = vitamin E
Simmondsia Chinensis = jojoba oil
Glycerin = humectant, draws moisture to skin
Phenoxyethanol = a common preservative in water-based products
The Bottom Line
Reading a skincare label is a skill, and like most skills it gets easier the more you practice. Start with the order of ingredients. Recognize that Latin names are just plain things in scientific language. Know the few ingredients that are worth questioning. And use the simple test of whether the ingredient list reads like a list of real, plant-based things or a list of synthetic chemicals.
Once you have this skill, you'll never look at a skincare product the same way. You'll be able to evaluate any label quickly and confidently, shop with real knowledge rather than just trusting marketing claims, and make choices that actually align with what you want on your skin.
And you'll probably notice that short, plant-based ingredient lists -- like the ones on our products -- start looking very appealing very quickly.
Browse our full collection at perfectlynaturalsoap.com
Want to go deeper on soap labels specifically? We've written a detailed post on the legal ins and outs of decoding soap ingredient labels that covers the two labeling methods soapmakers use and what each one means. And if you want to understand specific ingredients we use and why, our ingredient deep-dive series covers shea butter, coconut oil, and goat milk in detail.