Geogard Ultra - Sample Size (5g)

• Preserves all kinds of cosmetic products with water soluble ingredients, like creams, lotions, shampoos, etc.
• To add skin moisturisation benefits to products

• 100% Natural
• It is soluble in water, propylene glycol, glycerin and mineral oil, but not in carrier oils or essential oils
• Easy to work with in powder
• Has no scent of its own
• Contains no parabens or formaldehyde releasers
• Approved by ECOCERT/COSMOS, NATRUE and the Soil Association
• Certified cosmetic grade
• Naturally biodegradable
• Vegan friendly
• Not tested on animals

Gluconolactone and sodium benzoate in powder form.

COA available for download here

Note: A Certificate of Analysis (COA) is a document sharing the outcomes of a scientific test. It helps us verify that a product meets the specified standards. These tests are conducted on product batches, so slight variations in results between different batches are normal. If the batch number on this COA doesn't match the one on the product you bought from us, please get in touch with us. This is just one recent instance. Feel free to reach out if you have any questions or concerns.

Usage: 1-2%, diluted in the water phase.

Optimum pH: 3-7

To maximise the pH stability of the final formulation, it may be necessary to employ use of a sodium citrate buffer and pH adjustment as described below:
1. Dose the final product with the required level of Geogard Ultra® along with a 1.5x amount of sodium citrate. So, a 2% dose of Geogard Ultra® should be accompanied by 3% sodium citrate
2. Mix thoroughly to ensure all solids have dissolved and adjust the pH of the formulation to 7.00-7.25 with a 30% sodium hydroxide solution (an alternative to sodium hydroxide could be L-arginine).
3. Finally, adjust the pH to desired final product pH (pH 5.4–5.5 is ideal) with dilute citric acid solution

Keep in mind that salts (sodium) are electrolytes and can interact with certain emulsifiers. Check that your emulsifier has an electrolyte tolerance.

Some may be sensitive to sodium benzoate. Avoid use of this preservative if you are, or do a skin patch test first.