Cosphaderm® Absolute RSPO MB (INCI: Propanediol, Sodium Lactate, Betaine, Aqua) is a 100% natural, multifunctional humectant blend. Supplied as a clear, colorless viscous liquid, it combines three powerhouse hydrators at optimized concentrations. This blend is specifically designed to improve skin barrier function while simultaneously supporting the preservation system through a non-biocidal, physical mechanism. All components are sourced via sustainable supply chains, includingMass Balance certified palm and upcycled sugar beet.
Key Benefits and Performance
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Triple-Action Hydration:
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Propanediol: Acts as a high-performance humectant and solvent, improving the skin-feel and penetration of other actives.
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Sodium Lactate: A core component of the skin’s Natural Moisturizing Factor (NMF), it provides deep hydration and maintains the acid mantle.
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Betaine: Derived from sugar beet, this natural osmolyte protects cells against environmental stress and significantly reduces skin irritation.
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Water Activity () Reduction: Unlike traditional preservatives that kill microbes directly, this blend works by binding free water. By reducing water availability, it creates an inhospitable environment for microbial growth, allowing for a reduced “preservative load” in the final formula.
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Barrier Support & Softening: The synergistic combination of these three osmolytes helps to strengthen the skin’s lipid barrier and results in a noticeably softer, smoother skin texture.
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Preservation Synergy: It serves as a strategic “hurdle” in a multi-component preservation strategy, making it ideal for “preservative-free” or sensitive skin claims.
Formulation Guidelines.
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Preservation Strategy: This is not a standalone preservative. Its efficacy must be evaluated via challenge testing within the context of the total formulation. It is a “booster” that makes existing antimicrobials more effective.
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Processing: Fully water-soluble. It should be added directly to the water phase at any stage of manufacturing.
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Electrolyte Management: Due to the high electrolyte content (primarily from the Sodium Lactate), it can negatively impact the viscosity of electrolyte-sensitive thickeners (e.g., Carbomers).
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Pro-Tip: If using Xanthan Gum, always hydrate and dissolve the gum completely before adding Cosphaderm® Absolute RSPO MB to ensure the desired rheology is achieved.
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