Gel-Based Body Lotion Formula for Skin Whitening

Here is a recommended formula and mixing guide for a gel-based body lotion focused on skin whitening, incorporating the ingredients you requested. This formula aims for a light, easily absorbed texture.

Recommended Ingredients and Usage Rates

Based on your requested ingredients and the properties of available products, here are the recommendations:

• Gel Base: Use Hyaluronic Acid Gel Base (Product ID: 9769) as the primary base for its light, hydrating, and oil-free properties. Use at a rate of up to 100% (adjust based on the total percentage of other ingredients).

• Vitamin C: For potent whitening, Vitamin C (L-ascorbic acid) (Ultra-Fine) (Product ID: 133) is highly effective. Use at a rate of 15%. Note: L-Ascorbic Acid is most stable and effective at a low pH (3.5-4.0), which can conflict with other ingredients like Niacinamide. Careful pH adjustment is crucial.

• Safe B3 (Niacinamide): Safe-B3™ (Vitamin B3, Niacinamide) (Product ID: 74) is excellent for reducing redness, improving skin barrier, and has whitening properties. Use at a rate of 5%.

• Horse Placenta: Horse Placenta (Product ID: 2309) can be included for its skin benefits. Use at a rate of 1-3%.

• Cosmo White: CosmoWhite™ (1-Methylhydantoin-2-Imide) (Product ID: 6188) is a whitening agent. Use at a rate of 0.1-1.5%.

• L-Glutathione: Glutathione (L-Glutathione) (Extrasol) (Product ID: 225) acts as an antioxidant and whitening agent. Use at a rate of 2% for whitening.

• Alpha Arbutin: Alpha Arbutin (Switzerland) (Product ID: 68) is a highly effective and safe whitening ingredient. Use at a rate of 2% for whitening.

• Moisture: In addition to the gel base, Advanced Moisture Complex (Product ID: 33657) provides enhanced hydration. Use at a rate of 3-10%.

• Penetration Enhancer: Tetrahydropiperine (Natural Penetration Enhancer) (Product ID: 2280) can help improve the absorption of active ingredients. Use at a rate of 0.01%.

• Preservative: A suitable preservative system is required as the Hyaluronic Acid Gel Base is preservative-free. The type and amount will depend on the specific preservative chosen.

Mixing Method

Creating a stable formula with these ingredients requires careful attention to pH and solubility. Here is a general method:

1. Prepare the Water Phase: In a separate container, dissolve the water-soluble powder ingredients: Vitamin C (L-ascorbic acid), Safe B3, Cosmo White, L-Glutathione, Alpha Arbutin, and Advanced Moisture Complex in a minimal amount of purified water. Gentle warming (below 40°C) may help dissolution for some ingredients like L-Glutathione, but avoid excessive heat.
2. Address pH Challenges: This is the most critical step. L-Ascorbic Acid is most stable at pH 3.5-4.0, while Safe B3 is optimal at pH 4.0-7.0, Alpha Arbutin at 3.5-6.5, and L-Glutathione at 3-6. Combining them requires finding a compromise pH range, likely between pH 4.0-6.0. Use a pH meter to measure the pH of your water phase and carefully adjust it using a suitable pH adjuster (e.g., a dilute solution of Sodium Hydroxide or Citric Acid) until it falls within this range. Be aware that maintaining optimal stability and efficacy for all ingredients simultaneously at one pH is challenging.
3. Dissolve Horse Placenta: Add the liquid Horse Placenta extract to the water phase and mix until fully incorporated.
4. Prepare Penetration Enhancer: Dissolve Tetrahydropiperine in a suitable solvent like Propylene Glycol or Glycerin at the recommended ratio (e.g., 1 part Tetrahydropiperine to 100 parts Propylene Glycol or 200 parts Glycerin). Add this dissolved solution to the water phase.
5. Combine with Gel Base: Gradually add the prepared water phase mixture to the Hyaluronic Acid Gel Base while stirring gently but continuously. Mix until a uniform gel is formed.
6. Add Preservative: Incorporate your chosen preservative system according to the supplier's instructions.
7. Final pH Check: Perform a final pH check and adjust if necessary to ensure it remains within the desired 4.0-6.0 range.

Important Considerations

• Stability: Due to the combination of ingredients with different optimal pH ranges, the long-term stability of this formula may be challenging. Storing the final product in a cool, dark place is recommended.
• Ingredient Quality: Ensure all ingredients are cosmetic grade and sourced from reputable suppliers.
• Patch Testing: Always perform a patch test before using the final product on a large area of skin.
• Professional Guidance: For commercial production or if you encounter stability issues, consulting with a cosmetic chemist is advisable.

This formula provides a starting point. You may need to experiment with the percentages and mixing methods to achieve your desired texture and stability while maximizing the efficacy of the active ingredients.