Comparison of Soy Extract (Isoflavones) and Hydrolyzed Soy Protein

Soy Extract (Isoflavones) and Hydrolyzed Soy Protein offer different benefits for the skin, and neither is inherently "better" than the other. The choice depends on the specific desired effect.

• Soy Extract (Isoflavones): Ingredients like Isoflaqua™ focus on the benefits of isoflavones, which are known for their phytoestrogenic activity. These can help with anti-aging by stimulating collagen, provide antioxidant protection, brighten skin by inhibiting melanin, improve moisturization by enhancing the skin barrier, and offer anti-inflammatory effects. They are often recommended for mature skin, especially during or after menopause, due to their hormone-like properties.

• Hydrolyzed Soy Protein: Ingredients like Tryptic-Soy™ are processed to break down soy protein into smaller molecules (peptides) that can be absorbed by the skin. Their primary benefits include skin conditioning, moisturizing, and supporting skin structure by inhibiting enzymes that break down skin proteins (anti-tryptic activity). They help maintain the skin's natural protein balance.

In summary, Isoflavones are more focused on anti-aging and hormone-related skin changes, while Hydrolyzed Soy Protein is more focused on general skin conditioning, moisture, and structural support.

Mixing Soy Extract (Isoflavones) into Toner

To mix a water-soluble Soy Isoflavone extract like Isoflaqua™ into a toner:

1. Prepare the water phase of your toner formulation.
2. Weigh the required amount of Soy Isoflavone powder. The recommended usage rate for Isoflaqua™ is 0.1-1.0%. While you mentioned wanting to use 5%, it is generally recommended to follow the supplier's suggested usage rate for optimal performance and stability.
3. Add the weighed powder to the water phase and stir until completely dissolved. Isoflaqua™ is water-soluble.
4. Proceed with adding other ingredients according to your toner formula.

Need for Preservative

Yes, a preservative is necessary when making a toner, especially one containing water and active ingredients like soy extracts. Water-based formulations are susceptible to microbial growth (bacteria, mold, yeast), which can spoil the product and pose a health risk. Adding a suitable broad-spectrum preservative system is crucial to ensure the safety and shelf life of your homemade toner.