Formulation Questions Answered

Here are the answers to your formulation questions:

1. Salicylic Acid EZ pH Range

Regarding Salicylic Acid EZ, while we don't have specific pH information for a product with that exact name, the efficacy of Salicylic Acid in exfoliation is generally best at a low pH, typically between 3 and 4. However, the optimal pH for a specific product can depend on its formulation and the specific type of Salicylic Acid used (such as water-soluble forms like Complex Salicylic Acid or ActiveRelease™ Salicylic Acid, or other types like SalicSoft® or Liquid Salicylic Acid). Always refer to the manufacturer's recommendations for the specific product you are using to ensure both efficacy and safety.

2. Xanthan Gum Base and Oil Emulsification

Xanthan Gum, including types like Xanthan Gum (clear gel type, smooth texture) or Xanthan Gum (clear gel type, normal texture), is primarily a thickener used in the water phase of formulations. It is not an emulsifier and cannot directly combine water and oil to form an emulsion on its own. Emulsifiers are required to create a stable blend of water and oil. Xanthan Gum can, however, be used in emulsions to increase the viscosity of the water phase, which helps to stabilize the emulsion and prevent the oil and water from separating, especially when only a small amount of oil is present.

3. Sunscreen in Formulas with Exfoliants and Oil-Free/Silicone-Free Options

Yes, it is possible to include sunscreen in formulations that contain exfoliants like Salicylic Acid (BHA) and Vitamin A. In fact, using sunscreen is highly recommended when using such ingredients, as they can make the skin more sensitive to sun exposure. Formulating a product that combines exfoliants and sunscreen requires careful consideration of ingredient compatibility and stability.

If you are looking for oil-free and silicone-free sunscreen options to include in your formula, based on the product descriptions, Titanium Dioxide Transparent (15nm, Water-Dispersion) is a water-dispersible physical sunscreen that appears to be free of added oils and silicones. Always check the full ingredient list (INCI) of the specific product to confirm its composition.