Formulating preservative systems for modern personal care products—especially those based on amino acid surfactants, wet wipes, or low‑pH skin‑care emulsions—presents a recurring headache: many traditional preservatives (parabens, formaldehyde releasers, methylisothiazolinone) face consumer rejection or regulatory restriction, while "green" alternatives often lack broad‑spectrum efficacy or are difficult to dose uniformly in aqueous systems. AscendPro® LCG / LCG‑N Green Preservative Blend (INCI: Ethyl Lauroyl Arginate HCl, Caprylyl Glycol, Glycerin) addresses both problems in one pre‑homogenized liquid. By synergistically combining Ethyl Lauroyl Arginate HCl (LAE)—a cationic, arginine‑derived antimicrobial—with Caprylyl Glycol (a multifunctional humectant/booster) in a glycerin carrier, it delivers broad‑spectrum activity against bacteria, yeast, and mold while being COSMOS‑approved and easy to incorporate. But how does this synergy work, is LCG‑N truly 100% natural‑origin per ISO 16128, and in which formulas does it outperform standalone preservative options?
What's Inside AscendPro® LCG / LCG‑N?
Component | INCI Name | Function in Blend |
|---|
Ethyl Lauroyl Arginate HCl | Ethyl Lauroyl Arginate HCl | Primary antimicrobial; cationic peptide derivative disrupts microbial cell membranes, effective at low use levels (typically 0.05–0.3% a.i.) |
Caprylyl Glycol | Caprylyl Glycol | Preservative booster / humectant; lowers MIC of LAE and other co‑preservatives, provides mild moisture‑binding |
Glycerin | Glycerin | Solvent / humectant carrier; keeps blend pumpable and aids uniform dispersion in water‑phase |
AscendPro® LCG: Natural Origin Index ≈ 70% (ISO 16128) — contains the above three components.
AscendPro® LCG‑N (New!): Natural Origin Index = 100% — same functional components, declared as fully bio‑based per ISO 16128; suitable for "100% natural origin preservative blend" claims.
Both grades are COSMOS APPROVED as preservative ingredients.
Why the LAE + Caprylyl Glycol Synergy Matters
Ethyl Lauroyl Arginate HCl (LAE) is effective but can be sensitive to formulation variables (pH optimum 3–7, incompatible with high anionics). Caprylyl glycol:
Boosts Antimicrobial Spectrum: Mildly active on its own against Gram‑positives; in combination, it reduces the LAE concentration needed for a pass per ISO 11930 / USP <51>.
Improves Water Phase Compatibility: As a small molecular humectant, it helps LAE dissolve/disperse more evenly, reducing spotting or localized under‑dose.
Adds Humectancy: Contributes to skin‑feel without tackiness—valuable in rinse‑off and leave‑on formats.
This pre‑blended synergy spares the formulator from weighing and homogenizing two actives separately—a common source of dosing error in pilot batches.
Recommended Use Level & pH Window
Parameter | Guidance |
|---|
Use Level (as supplied blend) | 0.5–2.0% w/w typical; exact level determined by challenge test & water activity |
Effective pH Range | 3.0–7.0 (LAE most active below pH 7; efficacy drops above pH 7.5) |
Addition Temperature | Cool‑down phase, < 40°C recommended to avoid thermal stress on LAE |
Compatible Systems | Amino acid surfactant cleansers, anionic/non‑ionic/cationic tolerant (verify in pilot), O/W emulsions, wet wipe lotions, toners, shampoos/body washes |
Incompatible | Strong oxidizers; avoid prolonged exposure to pH > 8 buffers |
Note: LAE is not recommended as sole preservative in products with high electrolyte load or > 15% ethanol—check with challenge test.
Ideal Applications (From Product Page + Formulation Practice)
1. Amino Acid Surfactant Cleansers (Facial / Body Wash)
Amino acid surfactants (e.g., sodium cocoyl glutamate, disodium cocoyl glutamine) are mildly anionic and often formulated near pH 5.5–6.0—ideal for LAE‑based blends. LCG preserves the cleanser without phenoxyethanol or parabens, aligning with "mild / amino‑acid" brand positioning.
2. Wet Wipes & Towelettes (Facial / Baby / Disinfecting‑type)
The blend's water‑soluble, low‑color, low‑odor profile suits hydro‑alcoholic or aqueous wipe lotions. Caprylyl glycol adds skin‑conditioning to offset surfactant dryness.
3. Skin‑Care Lotions & Creams (O/W)
At 0.8–1.5% in the water phase, LCG provides robust preservation for emulsions with natural extracts or botanicals that may introduce bioburden. Compatible with most emulsifier systems when added post‑emulsification at ≤ 40°C.
4. Tone / Essence / Micellar Water
Clear, low‑viscosity aqueous products benefit from the blend's clarity and ease of incorporation—no pre‑dissolution step required beyond simple stirring.
Regulatory & Certifications Snapshot
COSMOS APPROVED (as preservative ingredient)
ISO 16128 Natural Origin Index: LCG ≈ 70%; LCG‑N = 100%
REACH / TSCA / IECIC Listed
Halal / Kosher Available on Request
FSSC 22000 / ISO 9001 Produced
Sourcing & Trial Considerations for B2B Buyers
When requesting a quote / sample for AscendPro® LCG / LCG‑N Green Preservative Blend:
✅ Specify LCG or LCG‑N (100% natural origin if required for claim).
✅ Request CoA (assay of LAE, caprylyl glycol, microbial limits).
✅ Ask for formulation guide — typical starting % for your product category (cleanser vs. emulsion vs. wipe).
✅ Inquire about MOQ & lead time for trial / bulk.
✅ Always conduct a qualified challenge test (ISO 11930 / CTFA / USP <51>) before finalizing preservative level.
Conclusion: One Blend, Broad‑Spectrum Protection, Clean‑Label Friendly
The AscendPro® LCG / LCG‑N Green Preservative Blend (Ethyl Lauroyl Arginate HCl + Caprylyl Glycol in Glycerin) simplifies preservative addition while supporting "free‑from" and COSMOS‑compatible positioning. Its synergy boosts efficacy, its liquid format ensures homogenous dosing, and the availability of a 100% natural‑origin version (LCG‑N) meets the most stringent clean‑beauty claims. For amino acid cleansers, wet wipes, and modern emulsions, it is a formulator‑friendly route to reliable, consumer‑accepted preservation.