Non-Paraben and Natural Preservative Alternatives for Hair Treatment and Shampoo

Based on your request to switch from Glydant/Glydant Plus to non-paraben or natural preservatives for your hair treatment and shampoo formulas, here are some recommendations:

For your shampoo formula, which contains surfactants, Mild Preserved Eco™ is a suitable non-paraben option. It allows you to claim the formula is preservative-free and is effective in shampoo bases. The recommended usage rate is 1.0-1.5%.

For your hair treatment formula, depending on its composition (especially if it's a water-based formula without significant amounts of surfactants, emulsifiers, or thickeners), Phenoxyethanol SA could be used at around 1%. However, it requires the formula pH to be between 2.0-6.0 and should be added below 60°C.

Alternatively, for both shampoo and hair treatment, you can consider other broad-spectrum, non-paraben options with wider pH ranges:

• Mild Preserved™ COS: Works in pH 2-8 and is odorless. Use at 0.75-1.5%, adding below 45°C.
• Mild Preserved CGZ™: Also allows for a "preservative-free" claim and works in a wide pH range of 4-9. It can withstand heat up to 80°C for a short time. Use at 0.5-2.0%.

If you prefer natural preservatives, consider these options, keeping in mind their pH requirements and heat sensitivity:

• NaturePreserve™ Ultra: A natural powder preservative requiring a pH of 3-6. Recommended usage is 0.75-2.0% (typically 1.25%). Avoid using with Vitamin C (L-Ascorbic Acid).
• NaturePreserve™ LB2: A natural liquid preservative effective at low pH values (2.0-6.5). Use at 0.5-1.0%, avoiding heat above 50°C.
• Coco-Preserve™: Derived from coconut extract, this natural liquid preservative works in pH 4-8. Use at 1.0-1.5% for cleansers or wipe juices, avoiding heat above 50°C.

When switching preservatives, it is crucial to check the pH of your final formula to ensure compatibility with the chosen preservative. It is also highly recommended to perform a challenge test on your finished product to confirm the preservative's effectiveness against microbial growth under real-world conditions before widespread use or sale.