Natural Emulsifiers — Binding Oil & Water with Intelligence
✧ Introduction
If surfactants cleanse…emulsifiers create.
They are what allow you to transform separate ingredients into creams, lotions, milks, and serums.
Without emulsifiers: → Oil and water will always separate.
This Lesson teaches you how natural emulsifiers work, why they are essential, and how to use them to create stable, professional formulations.
✧ What is an Emulsifier?
An emulsifier is an ingredient that allows oil and water to combine and stay combined.
It stabilises mixtures that would naturally separate.
You will use emulsifiers to create:
• Creams
• Lotions
• Milks
• Conditioners
• Some serums
•
✧ Why Emulsifiers Are Needed
Oil and water naturally repel each other.
• Oil = lipophilic (oil-loving)
• Water = hydrophilic (water-loving)
Without an emulsifier: → your product will split into layers.
✧ An emulsifier allows you to:
• Blend oil + water into one uniform product
• Deliver both water-soluble and oil-soluble ingredients
• Improve texture and skin feel
• Increase product stability
✧ How Emulsifiers Work
Like surfactants, emulsifiers have a dual structure:
• Hydrophilic head (water-loving)
• Lipophilic tail (oil-loving)
When forming an emulsion:
• The lipophilic part anchors into oil droplets
• The hydrophilic part faces outward toward water
• This creates a stable structure that holds droplets in suspension
This forms an emulsion system where oil droplets are dispersed throughout water (or vice versa).
✧ Types of Emulsions
Oil-in-Water (O/W)
• Oil droplets dispersed in water
• Light, fast-absorbing
• Typical of lotions and facial creams
Water-in-Oil (W/O)
• Water droplets dispersed in oil
• Rich, protective, slower absorbing
• Ideal for barrier repair products
✧ Natural Emulsifiers — List & Origin
Olive-Derived Emulsifiers
Olivem 1000 (The Bunyah Botanical Way)
• Derived from olive oil fatty acids
• Creates elegant, skin-like emulsions
• Biomimetic (similar to skin lipids)
Sugar & Coconut-Derived
Montanov 68
• Derived from coconut oil + glucose
• Produces light, silky emulsions
• Excellent for creams and lotions
Montanov 202
• Similar origin, slightly different texture profile
Lecithin-Based
Lecithin (Sunflower or Soy)
• Derived from plant phospholipids
• Naturally occurring in cell membranes
• Creates softer, more fluid emulsions
Fatty Alcohol-Based (Co-Emulsifiers)
Cetearyl Alcohol
• Derived from coconut or palm
• Thickens and stabilises emulsions
Cetyl Alcohol
• Adds slip and improves texture
✔ These are not primary emulsifiers but are essential for stability
Natural Wax Emulsifying Systems
Beeswax (with borax or co-system)
• Traditional emulsifying system
• Creates heavier, protective creams
Candelilla Wax / Carnauba Wax (with co-emulsifiers)
• Plant-based alternatives
• Provide structure and stability
✧ How Emulsifiers Work in Your Formulation
In a product, emulsifiers:
• Bind oil and water into a stable system
• Influence texture (light lotion vs rich cream)
• Affect absorption rate
• Stabilise actives and functional ingredients
✧ Professional Insight
A good formulation uses:
• A primary emulsifier
• A co-emulsifier or thickener
• A balanced oil-to-water ratio
This creates a product that is:
✔ Stable
✔ Elegant
✔ Skin-compatible
✧ Why Products Separate
Understanding failure is key to becoming a confident formulator.
Common reasons emulsions break:
1. Incorrect Emulsifier Ratio
• Too little emulsifier = unstable system
2. Poor Phase Balance
• Too much oil or water without adjustment
3. Inadequate Mixing or Temperature Control
• Phases not combined at correct temperature
• Insufficient shear (mixing energy)
4. No Co-Emulsifier or Stabiliser
• Lack of fatty alcohols, gums, or waxes
5. pH Incompatibility
• Some emulsifiers are sensitive to pH changes
6. Electrolytes or Actives Interfering
• Certain ingredients destabilise emulsions
7. Cooling Too Quickly or Incorrectly
• Structure doesn’t form properly
✧ Signs of an Unstable Product
• Oil pooling on the surface
• Water separation
• Grainy or curdled texture
• Thin or broken consistency
✧ How to Create Stable, Beautiful Emulsions
✔ Use a well-researched emulsifier system
✔ Heat oil and water phases separately (typically ~70°C)
✔ Combine phases correctly (depending on system)
✔ Mix thoroughly during emulsification
✔ Add cool-down ingredients below 40°C
✔ Include stabilisers (fatty alcohols, gums)
✧ Emulsifiers vs Surfactants (Important Distinction)
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Emulsifiers and Surfactants Bind oil + water
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Clean oil + dirt
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Stay on skin
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Rinse off
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Create creams
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Create cleansers
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Understanding this difference is foundational.
✧ Bunyah Botanicals Philosophy
An emulsifier is not just functional—it shapes the entire sensory experience of your product.
At Bunyah Botanicals, we choose emulsifiers that:
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Respect the skin barrier
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Mimic natural skin structures
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Support hydration and repair
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Because formulation is not just chemistry—it is skin intelligence in action.
Grab a pen and paper and check your understanding:
✧ Quiz: Natural Emulsifiers
1. What is the primary role of an emulsifier?
A. Clean the skin
B. Preserve the product
C. Combine oil and water
D. Add fragrance
2. Why do oil and water separate naturally?
A. They have different colours
B. They have different densities
C. They are chemically incompatible (lipophilic vs hydrophilic)
D. They evaporate at different rates
3. What structure allows emulsifiers to work?
A. Single chain molecules
B. Dual structure (water-loving + oil-loving)
C. Crystalline structure
D. Protein chains
4. Which is a natural emulsifier derived from olive oil?
A. Sodium Lauryl Sulfate
B. Olivem 1000
C. Alcohol
D. Silicone
5. What is a common reason emulsions fail?
A. Too much fragrance
B. Incorrect emulsifier ratio
C. Too much water
D. Too many oils
6. What role do fatty alcohols play?
A. Clean the skin
B. Preserve the product
C. Stabilise and thicken emulsions
D. Add colour
7. What type of emulsion is typically lighter?
A. Water-in-oil
B. Oil-in-water
C. Wax-based
D. Solid emulsions
✧ Answer Key
• C
• C
• B
• B
• B
• C
• B
