Natural Preservatives for 100% Aloe Vera Gel

For preserving 100% aloe vera gel, which is a water-based product, you need a natural preservative that is water-soluble and effective within the typical pH range of aloe vera gel (around 4.0-5.0). Here are a few suitable options:

• NaturePreserve™ Ultra (Gluconolactone & Sodium Benzoate): This is a natural preservative that is water-soluble and works in a pH range of 3-6. The recommended usage rate is 0.75-2.0%, with 1.25% often suggested for general products. It is a powder.
• PaeoniaPreserve™ (Natural Preservative): Extracted from Paeonia root, this is a water-soluble liquid preservative. It can be used as a single preservative at 2% or combined with others at 0.5-1.0%. Avoid heat above 60°C during mixing. It has a mild natural scent.
• Probio-Protect™ (Lactobacillus Ferment Preservative): This is a probiotic-based preservative that dissolves in water. It is recommended at a usage rate of 2.0% (range 0.5-4.0%) and also offers moisturizing benefits. Avoid heat during mixing.
• Global Guard™ 221 (pH 2-7, Natural): A water-soluble broad-spectrum preservative effective in a pH range of 2-7. The usage rate is 0.5-1.1%. Avoid heat above 45°C.
• Coco-Preserve™ (Preservative from Coconut Extract): This natural preservative is directly water-soluble and effective in a pH range of 4-8. Use at a rate of 1-2%. Avoid heat exceeding 50°C.
• NaturePreserve™ LB2: A natural origin preservative that is directly water-soluble and works well in a pH range of 2.0-6.5. The recommended usage rate is 0.5-1.0%. Avoid heat exceeding 50°C.

When choosing a preservative, consider the required usage rate, any scent it might impart (like Thyme Care™, which has a strong scent and is soluble in oil/glycol, making it less ideal for a pure water gel), and its compatibility with your specific aloe vera gel product. Always follow the manufacturer's recommended usage rate and mixing instructions.

Important: Before selling any cosmetic product, it is crucial to perform a challenge test to ensure the preservative system is effective against microbial growth in your specific formulation.