From Herb to Formula: How Botanical Ingredients Become Skincare
Updated: Aug 27
Long before botanical extracts appeared on cosmetic ingredient lists, plants were part of the way people cared for the skin.
Herbs were steeped in water, infused into oils, crushed into preparations, and combined with ingredients such as olive oil, honey, waxes, resins, and aromatic materials. Knowledge developed through observation and experience and was passed from one generation to another.
Today, botanical ingredients in skincare can take considerably more sophisticated forms. We have concentrated extracts, hydrosols, standardized ingredients, modern preservation systems, and a much greater understanding of cosmetic chemistry and the skin.
But one question remains remarkably similar:
How do we take something from the plant and make it useful in a preparation for the skin?
The answer begins long before the modern cosmetic laboratory.
When Plants Belonged to Gods and Mortals
In the ancient Mediterranean world, plants were not separated neatly into categories of food, medicine, beauty, fragrance, and ceremony.
The same plant might occupy several of these worlds.
In Greece, plants occupied another realm as well: mythology.
The olive tree was sacred to Athena. According to myth, Athena and Poseidon competed for patronage of the city that would become Athens. Athena offered the olive tree—a gift that provided food, oil, wood, and light—and the city took her name.
The olive would become a symbol of peace, victory, abundance, and endurance, but also something deeply practical. Olive oil was part of everyday Mediterranean life and was used on the body as well as at the table.
Other plants carried their own stories.
Laurel became inseparable from Apollo. Myrtle was associated with Aphrodite. The pomegranate became forever connected to Persephone and the changing seasons.
Plants could represent beauty, transformation, fertility, victory, loss, renewal, and the gods themselves.
This does not tell us whether a plant belongs in a modern skincare formulation.
But it does tell us something important about our relationship with botanicals.
We have been assigning meaning—and value—to plants for a very long time.
From Myth to Observation
The ancient Greek relationship with plants was not confined to mythology.
Over time, observation of the natural world became increasingly systematic.
Theophrastus, a student and successor of Aristotle who lived during the fourth and third centuries BCE, wrote extensively about plants, their characteristics, growth, and uses. His surviving works are among the earliest systematic botanical writings and have earned him a place in the history of botany.
Several centuries later, the Greek physician and pharmacologist Dioscorides compiled De Materia Medica, an extensive account of substances derived from plants, animals, and minerals and the ways in which they were prepared.
His work became enormously influential and remained an important reference on medicinal substances for centuries.
Of course, ancient preparations should not simply be transferred into modern skincare and assumed to be effective—or safe—because they are traditional.
What interests me instead is something much simpler.
Preparation mattered then, and preparation matters now.
A plant could be crushed, steeped, infused, or combined with another material depending upon what was being prepared.
Modern cosmetic science has given us far more precise ways of doing this.
But the fundamental idea is surprisingly familiar.
A Plant Is Not Yet a Cosmetic Ingredient
When we talk about botanical skincare, we often begin with the name of the plant.
Aloe Vera.
Lavender.
Sage.
Greek Mountain Tea.
But from a formulation perspective, the plant name is only the beginning.
Take lavender.
Lavender can be infused into an oil. It can be distilled to produce an essential oil. The same distillation process produces a hydrosol. It can also be prepared as a botanical extract.
All of these begin with lavender.
They are not the same cosmetic ingredient.
Their chemical composition differs, the way they behave in a formula differs, and the reasons for choosing them can differ as well.
That distinction is at the heart of botanical formulation.
The question isn't only:
Which plant should I use?
It is also:
What do I want from it, and which preparation gives me that?
The Ancient Art of Infusion
Infusing herbs into oil is one of the simplest and oldest forms of botanical preparation.
Plant material is allowed to macerate in a carrier oil, giving suitable oil-soluble constituents time to move into that oil.
It sounds wonderfully simple—and in principle, it is.
But even a simple infusion involves choices.
Which part of the plant should be used? Is the botanical material fresh or dried? Which carrier oil is appropriate? How long should the infusion continue? Should heat be used? How will the finished oil be stored?
And, perhaps most importantly, what are we hoping to obtain from the plant?
This is where an old method begins to meet modern formulation thinking.
An infused oil is also very different from an essential oil. Essential oils consist primarily of concentrated volatile aromatic compounds obtained through processes such as distillation or expression. An herbal oil infusion contains components that have been extracted into a fatty carrier oil.
One plant can therefore give us very different materials.
Oil, Water, Distillation or Extract?
Imagine a single herb sitting on a formulation table.
There are several possible paths.
Place suitable plant material into oil and certain oil-soluble constituents can be extracted into the carrier.
Prepare an aqueous extraction and a different range of water-compatible compounds may become available.
Distill an aromatic plant and volatile compounds can be collected as essential oil, with an aromatic water or hydrosol produced alongside it.
Use a professionally prepared botanical extract and the extraction system may be designed to concentrate, preserve, or standardize particular plant constituents.
Dry and grind plant material into powder and yet another type of ingredient is created.
The plant has not changed.
What we have taken from it has.
And that changes what the ingredient can contribute to skincare.
A Few Familiar Herbs, Many Possibilities
This is particularly easy to see in some of the herbs I return to frequently.
Aloe Vera is naturally water-rich and contains polysaccharides along with other plant constituents. In cosmetics, it may appear as juice, gel, concentrated powder, or extract. Simply reading “Aloe Vera” on the front of a product therefore tells us very little about how it has actually been formulated.
Calendula is particularly familiar as an oil infusion. Its golden flowers contain carotenoids, flavonoids, and other naturally occurring botanical constituents. A calendula macerate allows oil-compatible components of the flower to become part of the carrier oil.
Lavender demonstrates perhaps even more clearly how one plant can take several paths. It can become an infused oil, hydrosol, essential oil, or botanical extract—each with a different composition and function.
Chamomile can likewise appear as an infusion, extract, hydrosol, or essential oil. Depending on the species and preparation, its botanical profile includes flavonoids and aromatic constituents. Bisabolol, a compound closely associated with chamomile, is also familiar to modern cosmetic formulators as an ingredient in its own right.
And then there are herbs such as Greek Mountain Tea & Sage Soap (Sideritis), plants deeply familiar within Mediterranean traditions. Their history makes them interesting to me, but their chemistry determines how I consider them in a formulation.
That distinction is important.
Tradition may introduce me to a plant.
It does not make the formulation decision for me.
Botanical Ingredients in Skincare: What Happens in a Modern Formulation?
Once a botanical becomes a cosmetic ingredient, another process begins.
Now it has to become part of a complete formula.
If I am working with an oil-soluble botanical extract, it needs an appropriate oil phase. A water-soluble extract belongs in an aqueous environment. Some botanical ingredients may be sensitive to heat. Others may need to be incorporated within a particular pH range.
Usage level matters.
Compatibility with other ingredients matters.
Texture and sensory experience matter.
And if the formulation contains water, preservation becomes essential.
This is one of the areas where romantic ideas about “natural” skincare can become misleading.
Water, Aloe Vera juice, hydrosols, and botanical infusions may sound gentle and beautifully simple. They can also provide an environment in which microorganisms can grow.
A modern botanical formulation therefore needs to respect both the plant and the microbiology.
Preservation does not make a water-based botanical formula less natural in spirit. It is part of formulating that product responsibly.
More Botanicals Does Not Necessarily Mean Better Skincare
There is another misconception worth addressing.
A long list of botanical extracts can look impressive.
That does not necessarily make a formulation better.
When I consider adding a botanical, I want to know why it is there.
What does it contribute?
Which constituents am I trying to incorporate?
Does its method of extraction make sense for this particular product?
Is it present at an appropriate level?
Does it complement the rest of the formulation?
Or am I adding it simply because its name looks attractive on an ingredient list?
Sometimes one carefully selected botanical preparation makes far more sense than several extracts competing for space in the same formula.
For me, botanical formulation is not about fitting as many plants as possible into a bottle.
It is about giving each ingredient a reason to be there.
Traditional Ingredients, Modern Possibilities
One of the things I find most interesting about botanical formulation is that traditional and modern approaches do not have to compete.
Extra Virgin Greek Olive Oil is a good example.
Its connection to Greece reaches back thousands of years. It carries history, mythology, agriculture, cuisine, and tradition.
I can appreciate all of that.
But when I formulate with it, I also need to look at it as an ingredient: its lipid composition, its sensory characteristics, its compatibility with the formula, its stability, and what role I want it to perform.
The same applies to Mastiha, Kozanis Red Saffron, Aloe Vera, sage, Greek Mountain Tea, or any other botanical I explore.
The story may be ancient.
The formulation decision is contemporary.
From Herb to Formula at AGNODICE
Greek botanical traditions provide an extraordinary source of inspiration for AGNODICE.
Sometimes I work with an old and wonderfully tactile process, such as slowly infusing an herb into oil.
At other times, a botanical water, a carefully prepared extract, or a modern ingredient derived from a plant gives me something a traditional preparation cannot.
I don't see a contradiction between the two.
The history of a plant can make me curious about it.
Its traditional use can encourage me to investigate it.
Its mythology can give it cultural meaning.
But ultimately, I still have to ask what it contributes to the formula.
The mythology, history, and landscape can inspire the beginning of a formulation. The formulation itself must still make sense.
Perhaps that is what I find most compelling about working with botanicals.
Thousands of years ago, someone gathered a plant, crushed a leaf, infused an herb into oil, or watched what happened when botanical materials were combined.
Today, we can return to some of those same plants with an entirely different understanding of extraction, chemistry, microbiology, and the skin.
The tools have changed enormously.
The curiosity has not.
Georgia
AGNODICE
Discover the Myth.
Frequently Asked Questions
What is a botanical ingredient in skincare?
A botanical ingredient originates from plant material, such as flowers, leaves, roots, bark, seeds or fruit. It may enter a skincare formulation as an oil, extract, hydrosol, powder, butter or carefully prepared infusion.
Are botanical extracts the same as the original plant?
No. An extract contains selected constituents obtained from the plant through a particular extraction method. It does not contain every compound found in the whole plant.
The resulting composition depends on the plant material, the part of the plant used, the extraction medium and the preparation method.
How are beneficial compounds extracted from herbs?
Botanical constituents may be extracted using water, oil, glycerin, alcohol, carbon dioxide or other suitable mediums. Each method draws out different types of compounds, which is why the extraction method must suit both the botanical and the purpose of the formulation.
What is an herbal oil infusion?
An herbal oil infusion is created by bringing prepared botanical material into contact with a carrier oil. Over time, selected oil-soluble constituents from the plant become part of the oil.
The carrier oil, botanical material, preparation method, temperature and infusion time all influence the resulting ingredient. An oil infusion does not extract every constituent from a plant because some botanical compounds are water-soluble rather than oil-soluble.
Is saffron infused in olive oil an herbal infusion?
Yes. In KLOTHÓ Rejuvenating Face Serum, I infuse Kozanis Red Saffron in organic Extra Virgin Greek Olive Oil. The olive oil acts as the infusion medium, carrying selected oil-soluble constituents from the saffron while contributing its own emollient character to the finished formulation.
This is different from adding saffron powder directly to the serum or using a water-based saffron extract.
Is an oil infusion the same as an essential oil?
No. An oil infusion is made by placing botanical material in a carrier oil so that selected oil-soluble constituents become part of that oil.
An essential oil is a concentrated aromatic material generally obtained through steam distillation or expression. The two ingredients differ considerably in composition, concentration and appropriate use.
How can herbal oil infusions be used in salves?
An herbal oil infusion can form the botanical foundation of a salve. After the infusion is prepared and filtered, it may be combined with waxes, butters or other selected oils to create the texture and purpose of the finished preparation.
I occasionally demonstrate handmade salves in my reels as examples of what can be created with herbal oil infusions. These educational preparations are not currently products offered for sale by AGNODICE.
Are botanical ingredients always gentle?
Not necessarily. Plant origin does not automatically mean that an ingredient is suitable for everyone or appropriate at every concentration.
Botanical extracts, essential oils and other plant-derived ingredients must still be selected and used with attention to concentration, formulation, stability and individual sensitivities.
Does using more botanical ingredients create a better product?
No. A longer ingredient list does not necessarily produce a more effective or carefully constructed formula.
Each botanical should have a clear purpose and be compatible with the other ingredients. A thoughtful formulation depends on balance, appropriate concentrations and the performance of the finished product—not on including the greatest possible number of plants.
Why not simply apply fresh herbs directly to the skin?
Fresh plant material can introduce water, microorganisms and natural variability into a preparation. It may also contain constituents that are irritating or unsuitable when used without proper processing.
Modern cosmetic formulation makes it possible to select more appropriate botanical forms while considering preservation, stability, concentration and safe use.
How does AGNODICE formulate with botanical ingredients?
I choose the form of each botanical according to the role it will serve within the complete formulation.
In KLOTHÓ Rejuvenating Face Serum, Kozanis Red Saffron is infused in organic Extra Virgin Greek Olive Oil. Other AGNODICE formulations may use hydrosols, liposoluble extracts, seed oils or different botanical preparations.
The plant’s history may inspire the formulation, but its concentration, compatibility, stability and effect on the finished product determine how it is used.
Which herbs are used in Greek-inspired skincare?
Greek-inspired skincare may draw from botanicals traditionally associated with Greece and the wider Mediterranean, including rosemary, sage, lavender, Greek mountain tea and calendula.
The presence of an herb alone does not define the quality of a product. Its botanical form, concentration and purpose within the complete formulation are equally important.
Which herbs does AGNODICE use in its skincare and soaps?
AGNODICE formulations feature botanical ingredients such as rosemary, lavender, calendula, dandelion, Greek mountain tea, sage and Aloe Vera.
Depending on the product, these may be used as herbal infusions, extracts, botanical waters, oils or other carefully selected preparations.
Not every botanical appears in the same form. The preparation method is chosen according to the constituents being sought and the role of the ingredient within the finished formula.
Where can I find Greek-inspired skincare made with herbs in Orlando?
AGNODICE is based in Orlando, Florida, where I formulate and handcraft Greek-inspired skincare and soaps using selected botanical ingredients and preparations.
The collection is available through the AGNODICE website at www.agnodice.net. Although the products are inspired by Greek botanicals, mythology and traditional ingredients, they are currently made in Orlando rather than Greece.
Perhaps that is what I find most compelling about working with botanicals.
Thousands of years ago, someone gathered a plant, crushed a leaf, infused an herb into oil, or watched what happened when botanical materials were combined.
Today, we can return to some of those same plants with an entirely different understanding of extraction, chemistry, microbiology, and the skin.
The tools have changed enormously.
The curiosity has not.
Georgia
AGNODICE
Discover the Myth.
