Foot Deodorant Formula Review

Your formula aims to provide a dry, comfortable feel, reduce bacterial odor, and decrease foot sweat. Here's a review of the ingredients and suggestions for adding Borneol Camphor and Potassium Alum:

Existing Ingredients

• Anti-Sweat (Aluminum Chlorohydrate) 20%: This is the primary active ingredient for reducing sweat (antiperspirant) and has antibacterial properties to help with odor control. The concentration is within the typical effective range.
• Dimethicone 30%: Dimethicone, especially a light viscosity type like Dimethicone (Ultra Light/1.5), helps provide a smooth, dry feel on the skin, contributing to the comfortable sensation you desire.
• Cool Touch (Menthyl Lactate) 0.5%: This ingredient provides a cooling sensation, enhancing the feeling of freshness and comfort.
• SiliSolve Plus 1%: This acts as an emulsifier or binder, helping to combine the different phases (water, oil, silicone) in your formula.
• Ginger extract 3%: Based on the description of Ginger Lily Extract, this ingredient is primarily used for its natural scent in cosmetic formulations and is not typically expected to provide significant efficacy on the skin, such as odor reduction.
• Lemon peel extract 2%: Based on the description of Lemon Peel Bioferment, this extract is known for its skin brightening and antioxidant properties. It is not typically used for foot odor control.

The core of your formula for sweat and odor reduction relies heavily on the Anti-Sweat (Aluminum Chlorohydrate). The Dimethicone and Cool Touch contribute well to the desired feel.

Adding Borneol Camphor and Potassium Alum

You asked about adding Borneol Camphor and Potassium Alum.

• Borneol and Camphor: These ingredients are often used for their cooling effect and characteristic scent. Camphor can also have mild antiseptic properties. Adding Borneol and Camphor can enhance the cooling sensation and potentially help mask odor with their fragrance. A suitable starting concentration for Borneol and Camphor combined or individually, when used for cooling or scent, is typically low, often in the range of 0.1% to 0.5%. Higher concentrations can cause irritation. You may need to experiment to find the level that provides the desired cooling without irritation.
• Potassium Alum: Potassium Alum (Potassium Aluminum Sulfate) is an astringent and antibacterial agent commonly used in deodorants. While I couldn't find a specific product named "Potassium Alum", Aluminum Sulfate is a related compound that was found. Adding another aluminum salt like Potassium Alum or Aluminum Sulfate to a formula already containing 20% Aluminum Chlorohydrate should be done with caution. Combining antiperspirant actives requires careful formulation to ensure stability and efficacy, and you must adhere to regulatory limits for the total concentration of aluminum salts in cosmetic products. If you wish to add an ingredient like Potassium Alum for its astringent and antibacterial properties, you would need to determine the appropriate concentration based on the specific product's specifications and regulatory guidelines, considering the existing Aluminum Chlorohydrate content. Without specific product data for Potassium Alum, it is difficult to recommend a precise percentage.

Consider the overall function you want from these additions. If you primarily want enhanced cooling and scent, Borneol and Camphor at low percentages would be suitable. If you are looking for additional sweat or odor control, ensure any added aluminum salt complies with regulations alongside the existing Aluminum Chlorohydrate.