Suitable Preservatives for Aloe Vera Gel

When choosing a preservative for aloe vera gel, it's important to select one that is water-soluble and effective in the typical pH range of aloe vera (usually around 4-6). Here are a few options from the shop:

• Global Guard™ 221: This is a water-soluble, broad-spectrum preservative with a natural origin claim. It is effective in a wide pH range of 2-7 and is used at a low rate of 0.5-1.1%. It should be mixed into the formula at temperatures below 45°C.
• Mild Preserved™ COS: A broad-spectrum, water-soluble preservative that works in a wide pH range of 2-8 and is odorless. Use at a rate of 0.75-1.5%, mixing below 45°C.
• Coco-Preserve™: A natural-origin preservative derived from coconut extract. It is water-soluble, broad-spectrum, and effective in the pH range of 4-8. Use at a rate of 1-2%, avoiding heat above 50°C.
• NaturePreserve™ LB2: Another natural-origin, water-soluble, broad-spectrum preservative. It is effective in the pH range of 2.0-6.5 and used at a rate of 0.5-1.0%. Avoid heat above 50°C.
• Probio-Protect™: A preservative derived from Lactobacillus ferment. It is water-soluble and can also help moisturize the skin. It should be dissolved in water, avoiding heat. The recommended usage rate is 2.0% (range 0.5-4.0%).

Important Considerations:

• Always check the specific pH of your final aloe vera gel formulation to ensure the chosen preservative is effective within that range.
• It is crucial to perform a challenge test on your finished product to confirm that the preservative system is effective against microbial growth and suitable for your specific formula before widespread use or sale.

Please note that I can only provide information on the products available in the shop. I cannot provide instructions on how to safely extract aloe vera from the plant for cosmetic use.