Lotion Formulation Review

Thank you for providing your lotion formula and mixing steps. Here is a review based on the ingredients and typical formulation practices:

Mixing Steps Review

Your proposed mixing steps have a few points that can be improved for better emulsification and stability, especially with Soft Cream Maker™. Soft Cream Maker™ requires heating in the oil phase and combining the hot oil phase with the hot water phase, followed by continuous stirring while cooling.

Here is a suggested revised mixing procedure:

1. Prepare WhiteCumin™ Solution: In a small separate container, dissolve WhiteCumin™ (0.2%) in Butylene Glycol (1%). Stir until fully dissolved.
2. Prepare Water Phase: Combine Purified Water (74.3%), Safe-B3™ (5%), CosmoWhite™ (1%), Grape Seed Extract (0.5%), Panthenol ExtraLite™ (2%), DMAE Liquid (1%), HydroAlgae™ (1%), and the WhiteCumin™/Butylene Glycol solution from step 1. Heat the Water Phase to 70°C.
3. Prepare Oil Phase: Combine Soft Cream Maker™ (2%), Gamma Oryzanol (0.5%), Vitamin E (0.5%), Argan Oil (5%), and Jojoba Oil (5%). Heat the Oil Phase to 70°C, stirring until Soft Cream Maker™ and Gamma Oryzanol are melted/dissolved.
4. Emulsification: Slowly add the hot Oil Phase (from step 3) to the hot Water Phase (from step 2) while stirring continuously with a mixer (e.g., stick blender or overhead stirrer). Maintain continuous stirring as the mixture cools down.
5. Add Heat-Sensitive Ingredient: When the mixture has cooled below 40°C, add Mild Preserved Eco™ (1%).
6. Final Mixing: Continue stirring until the lotion is fully cooled and uniform. The texture will continue to develop over the next 48 hours.

Specific Questions

• Question 1: Mixing steps correctness. As reviewed above, the proposed steps need adjustment to properly incorporate Soft Cream Maker™ and ensure stable emulsification. The revised steps are provided above.
• Question 2: Need for Tween 20. WhiteCumin™ can be dissolved in glycol or Polysorbate 20 (Tween 20). Since your formula already includes Butylene Glycol, which is a glycol, Polysorbate 20 is not strictly necessary for dissolving WhiteCumin™ if 1% Butylene Glycol is sufficient. However, adding a small amount of Polysorbate 20 could help ensure complete dissolution and dispersion of WhiteCumin™, although it would slightly alter the formula.
• Question 3: Sufficiency of Butylene Glycol 1%. While Butylene Glycol can dissolve WhiteCumin™, 1% might be on the lower side to ensure complete dissolution of 0.2% WhiteCumin™, especially in a complex formula. To improve solubility assurance, you could consider increasing the Butylene Glycol percentage (e.g., to 2-5%) or using a small amount of Polysorbate 20 as mentioned in the previous point.
• Question 4: Expected texture and adjustment. With 2% Soft Cream Maker™ and approximately 15.2% total oil phase, the resulting texture is likely to be a light lotion or even a serum-like consistency initially. Soft Cream Maker™ at 2% is below its recommended usage range (3-10%) for achieving significant viscosity. The texture will thicken over about 48 hours, but it may remain quite fluid. If you desire a slightly more viscous lotion texture, you could increase the Soft Cream Maker™ percentage (e.g., to 3-5%) or add a co-emulsifier/thickener like Cetyl Alcohol (1-3%). The oils used (Argan Oil, Jojoba Oil) are generally non-greasy and should contribute to a pleasant skin feel.

Hope this helps with your formulation!