Not All Botanical Extracts Are the Same

When people think about botanical skincare, the focus usually goes to the herbs themselves — turmeric, calendula, brahmi, rose, or ashwagandha. But one of the most important parts of formulation is often overlooked: the medium used to extract those herbs.

The choice between water and lipids changes what is actually pulled from the plant material. Different compounds dissolve into different substances, which means the extraction method shapes not only the chemistry of the preparation, but also its texture, stability, and interaction with the skin.

This distinction is central to both modern formulation science and traditional Ayurvedic preparation methods.

Ayurveda understood very early that oils and ghee were not interchangeable with water. Each medium carried different qualities and extracted different aspects of a plant. That understanding became foundational to systems like Sneha Kalpana, where herbs are processed slowly into oils and ghees through controlled preparation methods.

The Difference Begins with Solubility

Plants contain a wide range of compounds, and those compounds do not all behave the same way.

Some are water-soluble, meaning they dissolve readily into water. Others are fat-soluble, meaning they dissolve more effectively into oils or lipids.

In modern chemistry, these are often described as:

• Hydrophilic compounds, which are water-loving
• Lipophilic compounds, which are oil-loving

This difference determines what an extraction process is actually capable of capturing.

The same herb can produce very different preparations depending on whether it is extracted into water, alcohol, oil, or ghee.

That is why extraction is never just a technical detail. It fundamentally shapes the final preparation.

What Water Extraction Does Well

Water-based extraction methods include teas, decoctions, infusions, hydrosols, and aqueous botanical extracts.

These methods are effective at pulling out certain classes of compounds, including:

• Sugars
• Tannins
• Some alkaloids
• Various water-soluble constituents

Water extractions also tend to create lighter textures and faster-absorbing formulations, which is one reason they are widely used in modern serums, gels, essences, and lotions.

At the same time, water-based systems usually require more preservation support because water creates an environment where microbes can grow more easily. They also interact with the skin differently than lipid-based formulations do.

This does not make them inferior. Water-based skincare can be elegant, effective, and highly functional. But it operates according to a different formulation logic.

Why Ayurveda Worked So Extensively with Oils and Ghee

Ayurvedic formulation traditions placed enormous importance on lipid-based preparation methods because oils and ghee extract compounds that water alone cannot capture effectively.

Lipid extraction methods include:

• Herbal oil infusions
• Medicated ghees
• Classical preparations such as Sneha Kalpana

These approaches are particularly useful for extracting fat-soluble plant compounds, including certain aromatic molecules, pigments, sterols, and other lipophilic constituents.

The resulting preparations also tend to behave differently on the skin. Lipids are compatible with the skin's own protective barrier, which is itself largely composed of fats and wax-like substances. Because of this, oil-based preparations often create a richer, more cushioning skin feel than water-heavy formulations alone.

Ayurveda recognized these qualities long before modern skincare language existed.

Sneha Kalpana: Combining Both Systems

One of the most sophisticated aspects of classical Ayurvedic preparation is that it often combines water extraction and lipid extraction together within the same process.

In Sneha Kalpana, herbs are cooked with:

• A lipid base such as oil or ghee
• A fine herbal paste (kalka)
• A water-based decoction (drava)

During cooking, the water phase helps hydrate the herbs and extract water-soluble compounds, while the oil or ghee absorbs fat-soluble constituents over time. As heating continues, the water gradually evaporates, leaving behind a finished lipid preparation that has interacted with both extraction phases.

This creates a more integrated preparation than a simple cold oil infusion alone.

The process reflects a deeper Ayurvedic understanding that preparation itself matters. The goal is not only to combine ingredients, but to allow materials to transform together through controlled heat, time, and interaction.

Stability and Skin Feel

The extraction medium also affects how a finished formulation behaves over time.

Water-based systems tend to feel lighter and more immediately refreshing, but they are generally more fragile from a preservation standpoint. They usually require emulsifiers, stabilizers, and preservative systems to remain safe and stable.

Lipid-based preparations, especially properly prepared anhydrous systems, are often naturally more stable because they contain little or no water. They also tend to create a slower, more conditioning experience on the skin.

This difference becomes especially relevant for people whose skin feels depleted, over-exfoliated, or reactive from highly active routines.

In practice, neither system is universally "better." They simply serve different purposes and create different experiences on the skin.

Why This Matters for Modern Formulation

Modern skincare often focuses heavily on ingredient identity: which botanical extract is included, what active percentage is used, or which trending ingredient appears on the label.

But extraction medium matters just as much as the ingredient itself.

A herb extracted into water behaves differently from the same herb extracted into oil or ghee. The sensory profile changes. The chemistry changes. The interaction with the skin changes.

This is one reason traditional Ayurvedic preparation methods still offer valuable formulation insight today. They remind us that skincare is not only about selecting ingredients. It is also about understanding how materials behave together and how preparation shapes the final result.

For us, this is part of why whole-herb lipid infusions remain so important. Slower oil and ghee preparations create formulations that feel more integrated, nourishing, and supportive compared to products built primarily around rapid activity or constant stimulation. The process itself contributes to the final character of the formulation.

A Different Philosophy of Extraction

At a deeper level, the distinction between water extraction and lipid extraction reflects two different ways of approaching skincare.

Water-based systems often prioritize immediacy, lightness, and fast sensory absorption. Lipid-based systems tend to emphasize nourishment, continuity, and longer-lasting comfort for the skin.

Both approaches have value. But in a skincare culture increasingly centered around stronger actives and faster visible change, traditional lipid preparation methods offer an important counterbalance.

They offer a reminder that skincare does not always need to rely on stronger stimulation or constant correction. In many cases, the skin responds well to formulations centered on nourishment, compatibility, and long-term support.

Citations

• Harborne, Jeffrey B. Phytochemical Methods: A Guide to Modern Techniques of Plant Analysis. 3rd ed., Springer, 1998.
• Handa, S. S., et al. Extraction Technologies for Medicinal and Aromatic Plants. International Centre for Science and High Technology, 2008.
• Azwanida, N. N. "A Review on the Extraction Methods Use in Medicinal Plants, Principle, Strength and Limitation." Medicinal & Aromatic Plants, vol. 4, no. 3, 2015, pp. 1–6.
• Elias, Peter M. "Skin Barrier Function." Current Allergy and Asthma Reports, vol. 8, no. 4, 2008, pp. 299–305.
• Madison, Katie C. "Barrier Function of the Skin: 'La Raison d'Être' of the Epidermis." Journal of Investigative Dermatology, vol. 121, no. 2, 2003, pp. 231–241.
• Vagbhata. Ashtanga Hridayam. Translated by K. R. Srikantha Murthy, Chaukhambha Krishnadas Academy, 2007.