Formulation Questions Answered

Based on your skin whitening cream formulation:

1. Increasing Sym-White™ (Phenylethyl Resorcinol) Concentration

The recommended usage rate for Phenylethyl Resorcinol is typically 0.1-1.0%. Your current formula uses 0.6%, which is within this range. While it is considered a safe whitening agent, increasing the concentration significantly beyond the recommended maximum of 1.0% is not generally advised and could potentially increase the risk of skin sensitivity. It is best to stay within the recommended usage range for optimal efficacy and safety.

2. Adding Other Whitening Agents

Yes, you can add other whitening agents to enhance the efficacy of your cream.

• Azelaic Acid (Liquid Azelaic™): This ingredient is effective for brightening skin, reducing dark spots, and controlling oiliness. It is water-soluble and can be added at a recommended concentration of 5-10%. Add it in the final step when the temperature is below 40°C, ensuring the formula's pH is between 5-11.
• Tranexamic Acid (Trans-White™): This ingredient helps brighten skin and reduce melanin, making it suitable for addressing blemishes. It is water-soluble and can be used at a maximum concentration of 3% in cosmetics. Mix it into the water phase. The formula's pH should be between 3-8.

When combining whitening agents, it's important to consider the overall concentration of active ingredients and the potential for irritation. Start with lower concentrations when combining multiple actives.

3. Adjusting the Cream Maker

Yes, you can adjust the cream maker in your formula.

• Your current formula uses Light Lotion Maker, which provides a light texture and is suitable for formulas with up to 40% oil.
• If you wish to use Luxury Cream Maker™, you would replace the Light Lotion Maker. Luxury Cream Maker™ creates a cream with a soft, heavy, and shiny texture. It does not require heat for mixing and can handle up to 20% oil. The recommended usage rate for Luxury Cream Maker™ is 3-7%. Since your formula has a low oil content and includes ingredients that might be electrolytes (like Snail Secretion and potentially added Azelaic Acid), you might need a percentage within the 3-7% range to achieve the desired cream consistency.

The choice between Light Lotion Maker and Luxury Cream Maker™ depends on the desired texture of the final product. If you prefer a lighter lotion, stick with Light Lotion Maker. If you prefer a richer, heavier cream, switch to Luxury Cream Maker™. Remember to remove Light Lotion Maker if you use Luxury Cream Maker™.