Plant Extracts: The Reason for Many Names and How to Read Them

When reading the full ingredient list on the back of a cosmetic product, unusually unfamiliar and long names often stand out. Most of these are plant-derived ingredients ending in '... Extract.' Some products list three or four such names, and sometimes more than ten.

The reason there are so many names is simple. Cosmetic ingredients are named according to the International Nomenclature of Cosmetic Ingredients (INCI) standard, which directly reflects 'which part of which plant was processed in what way.' Even for the same plant, an extract taken from the leaves versus the roots will have a different name, and the labeling can also vary depending on whether it was extracted with water or processed in another way.

Why are extract names broken down into such detail?

The name of a plant extract generally follows the structure 'plant name + part (if applicable) + extract.' For example, some names refer to the whole plant, like Portulaca Oleracea Extract, while others specify only a particular part. This naming structure itself is not a guarantee of the ingredient's effect, but rather a device to standardize and indicate exactly what the raw material is made from.

So just because a name looks unfamiliar doesn't mean you should assume it's an unnecessary ingredient. Conversely, a familiar-sounding name doesn't necessarily mean it will suit your skin well. The role of the name is to 'clarify identity,' while what role that ingredient actually plays in the formulation can only be judged by looking at its position in the full ingredient list together with its combination with other ingredients.

What the position of an extract in the full ingredient list tells you

Under cosmetics regulations, the full ingredient list is required to be arranged in descending order of content (although there may be exceptions to this ordering rule for ingredients below a certain proportion). So whether a plant extract appears near the front or the back can serve as a clue to how much it accounts for in the overall formulation.

However, position alone is not enough to conclude that an ingredient 'makes no difference whether it's there or not.' Some plant-derived ingredients are designed to serve their intended formulation purpose even in small amounts, and they often take their place alongside other ingredients within the overall design intent of the product. So along with the habit of checking the order, it's a more practical way of reading to also look at what category of ingredients that extract is positioned near.

How to read frequently seen names like Portulaca Oleracea Extract

One of the plant extracts frequently seen in cosmetics is Portulaca Oleracea Extract. Like Centella Asiatica-derived ingredients (Asiaticoside, Madecassic Acid, Asiatic Acid), Portulaca Oleracea Extract is also classified as a plant-derived ingredient category that has long been used in cosmetics for the purpose of soothing skin care.

It is more realistic to understand these ingredients not as creating dramatic changes on their own, but as playing a supporting role, together with other ingredients aimed at moisturizing and barrier care, in reinforcing the overall skin condition care direction of the product. In other words, the more accurate way to read a full ingredient list is not to focus on 'because of this one ingredient,' but to look at 'what combination this ingredient is part of.'

What's the difference between an extract and an individual ingredient?

Looking at a full ingredient list, you'll see names like '○○ Extract' listed alongside ingredients denoted by a single substance name, such as Adenosine or Panthenol. These two are different in nature. An extract is closer to a mixture of multiple substances extracted together from raw plant material, whereas an individual ingredient is a single substance with a specific chemical structure.

For example, Adenosine is a listed ingredient that serves as the basis for review when a product is examined as a functional cosmetic for wrinkle improvement, following set standards for content and labeling. Plant extracts, on the other hand, tend to have a relatively complex composition due to the nature of the raw material, and their formulation purpose is often designed as a supporting role, such as soothing or moisturizing care. So when choosing a product, rather than focusing on how many types of plant extracts are included, it's a more practical approach to also check what individual ingredients are responsible for the core function and on what basis they were formulated.

Points to be careful about when looking at plant ingredients

The name being plant-derived itself does not necessarily mean it is mild or safe. Even plant extracts can cause irritation depending on an individual's skin condition, and if you have a history of allergic reaction to a specific plant, it is a good habit to check the full ingredient list beforehand for that name.

Also, the fact that several types of plant extracts are listed does not itself provide grounds for judging the completeness of a product. What ultimately matters is what position these supplementary ingredients occupy within the overall design of the product—that is, within a structure where ingredients responsible for moisturizing and barrier care and key ingredients aimed at elasticity and wrinkle management are woven together.

When looking at the full ingredient list, the priority to ultimately check

Once you've developed the habit of reading the names and positions of plant extracts, the natural next step is to look at what the product is designed to focus on as its core. Separately from plant-derived ingredients that support moisturizing and soothing, if you want to manage changes that occur over time, such as elasticity or wrinkles, you should check whether there is a separately formulated ingredient aimed at that goal.

에르쯔틴 리제너레이티브 실트 크림 has a structure that contains plant-derived soothing care ingredients such as Centella asiatica-derived ingredients (asiaticoside, madecassic acid, asiatic acid) in its full ingredient list, while also formulating adenosine, a notified ingredient reviewed as a wrinkle-improvement functional cosmetic, thereby dividing two purposes within a single cream. When reading a full ingredient list, rather than simply looking at the names of plant extracts listed, checking which key ingredients each extract is paired with can make the criteria for choosing a cream a bit clearer.

Reviewed by 아비쥬의원 의료진. (September 7, 2026)