How to Mix Salicylic Acid in Gel for Oily Skin

Experiencing difficulty mixing and high viscosity when making Salicylic Acid gel for oily skin is a common issue. The main reasons are often using a form of Salicylic Acid not suitable for gel formulation or incorrect mixing procedures.

Based on the available Salicylic Acid products, here is some guidance:

1. Using Standard Powder Salicylic Acid (Salicylic Acid (BHA))

• Standard powder Salicylic Acid is not directly water-soluble.
• Correct Mixing Method: It must be dissolved in a suitable solvent first, such as Propylene Glycol, Butylene Glycol, or Isopentyldiol (which is the best solvent), at an appropriate ratio according to product recommendations (e.g., dissolves up to approximately 25% in Isopentyldiol).
• After dissolving until clear and uniform, gradually add this dissolved mixture into your gel base while stirring continuously. Adding it while stirring helps ensure better dispersion.
• Adding powder Salicylic Acid directly to the gel base without pre-dissolving will result in uneven dispersion, lumps, or abnormally thick/viscous gel texture.

2. Using Water-Soluble Salicylic Acid Types

To solve mixing difficulties, consider using Salicylic Acid types that have been modified to be more easily water-soluble, such as:

• Liquid Salicylic Acid (40% Active Salicylic, Cationic For Wash-Off): This is a liquid type that is directly water-soluble and easy to mix. It can be added directly to water or the gel base. However, it is very important: This type of Salicylic Acid is incompatible with certain gelling agents like Carbomer (Pro Polymer), Xanthan Gum, and Natural Organic Thickener. If you want to make a gel, you should use Hydroxyethyl Cellulose or HPMC instead.
• ActiveRelease™ Salicylic Acid (Powder, Water-Soluble): This is a powder type that is directly water-soluble. It can be dissolved directly into the water phase of your gel formula.

Summary of Recommendations

• Check which type of Salicylic Acid you are using (standard powder or water-soluble type).
• If using standard powder, you must dissolve it in a solvent before incorporating it into the gel.
• If using a water-soluble liquid type or water-soluble powder type, they will be easier to mix. However, check compatibility with your gelling agent, especially the liquid type which is incompatible with Carbomer or Xanthan Gum.
• Choosing an appropriate gelling agent also affects the viscosity and clarity of the Salicylic Acid gel. Select one that is compatible and provides the desired texture for oily skin.