Formulation Tips for Body and Deodorant Powder

Here are some recommendations for formulating body powder and deodorant powder containing alum:

1. Preservatives

For powder formulations, especially those containing ingredients like alum which can attract moisture, controlling water activity is key to preventing microbial growth. While powders are generally less prone to microbial contamination than liquid products, adding a preservative can provide extra protection, particularly if the product might be exposed to humidity or moisture during use.

Suitable powder preservatives include:

• Iodopropynyl Butyl Carbamate (IPBC): Effective at very low concentrations and suitable for leave-on products. It offers broad-spectrum activity.
• Sorbic Acid: Another option that can be used as a preservative in powder formulations.

Dehydroacetic Acid is effective against yeast and molds but may need to be combined with another preservative for broad-spectrum bacterial control, which might be more complex in a simple powder system.

2. Fragrance Longevity

Adding liquid fragrance directly to powder can cause clumping and the scent may dissipate quickly. To help the fragrance last longer and disperse better, consider these options:

• Perfume Beads: These beads absorb liquid fragrance and release it gradually over time, helping the scent last longer in the powder.
• Fragrance Encapsulation: Using a service like AromaLock™ can encapsulate your chosen fragrance into a powder form. This helps protect the fragrance, improves its dispersion in the powder, and provides sustained release for longer-lasting scent.

Mix the chosen fragrance carrier (perfume beads or encapsulated fragrance powder) thoroughly with your main powder ingredients.

3. Preventing Clumping

To prevent the powder from clumping, especially in humid conditions or due to ingredients that attract moisture like alum, an anti-caking agent is recommended.

• Anti-Caking Silica: This ingredient effectively absorbs moisture and prevents powder particles from sticking together, ensuring the powder remains free-flowing and extends its shelf life by reducing moisture exposure.

Add Anti-Caking Silica to your powder mixture and ensure it is evenly dispersed.

By incorporating these ingredients and techniques, you can create a stable body or deodorant powder with a longer-lasting fragrance and improved texture.