Why Preservation Matters

Any skincare product containing water — whether from distilled water, aloe vera or botanical extracts — creates an environment where microorganisms can grow. Bacteria, yeast and mould require moisture to multiply. Without effective preservation, contamination can occur quickly, particularly in products stored in warm, humid environments.

Microbial growth is not theoretical. It can lead to product spoilage, skin irritation, infection risk and destabilised formulas. A product that is “preservative-free” yet contains water is not safer — it is unstable. Safe natural skincare must be microbiologically protected.

Preservation is not optional. It is a fundamental component of responsible formulation.

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What Makes a Preservative Gentle

Not all preservative systems are equal. A barrier-first approach prioritises systems that maintain product safety without compromising skin tolerance.

A well-designed gentle preservative system should provide:

Broad-Spectrum Efficacy
Protection against bacteria, yeast and mould — not just one category of microbes.

Low Irritation Profile
Minimal risk of redness, stinging or sensitisation when used at recommended levels.

Stability Across pH Ranges
Effectiveness within the formula’s working pH, ensuring consistent protection over time.

Low Sensitisation Rates
Reduced likelihood of allergic response compared to higher-risk systems.

The objective is balanced protection: strong enough to maintain safety, mild enough to respect sensitive skin.

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Leucidal SF Complete

Leucidal SF Complete is a preservative system derived from fermented radish root. It contains Lactobacillus ferment and AMTicide (a ferment-based antimicrobial component). It is widely used in natural and eco-conscious formulations.

It is marketed as naturally derived and is often selected for its lower irritation potential compared to some conventional systems. When used correctly within the appropriate pH range, it provides broad-spectrum antimicrobial support.

However, no preservative system functions effectively without proper formulation control. Concentration, pH balance and stability testing are critical. “Natural” does not eliminate the need for rigorous safety standards.

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Benzyl Alcohol + Dehydroacetic Acid

Benzyl alcohol combined with dehydroacetic acid is a globally approved preservative system used in many natural-certified formulations. It provides broad-spectrum protection against bacteria, yeast and mould while remaining effective at relatively low usage levels.

This system is recognised by multiple international regulatory bodies and accepted within various natural and eco-certification frameworks. When formulated within recommended percentages, it is generally well tolerated by most skin types, including sensitive skin.

As with all preservative systems, effectiveness depends on correct formulation and stability testing.

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Why We Use What We Use

Our preservation decisions follow the same logic as the rest of our formulation process: barrier-first, safety-led and transparent.

We avoid preservative systems associated with higher sensitisation risk, including formaldehyde donors, methylisothiazolinone (MIT) and certain high-risk synthetic systems. At the same time, we do not engage in fear-based marketing that demonises all conventional ingredients without scientific context.

Instead, we choose preservation systems that:

• Maintain microbiological safety

• Align with sensitive-skin tolerance

• Meet regulatory standards

• Integrate effectively within balanced formulations

Natural skincare should not compromise safety in pursuit of a label. Responsible preservation ensures that every product remains stable, effective and safe throughout its use.