How to Formulate a Clear Gel Sunscreen using SPF Protect Ultra™ III
Question
I am looking to create a clear gel sunscreen using the oil-soluble blend SPF Protect Ultra™ III.
- Which base or gelling agent should be used to achieve a clear, stable oil gel texture?
- If absolute clarity is not possible, what base can be used to create a light gel texture that melts or dissolves upon application into the skin?
Answer
To create a clear gel sunscreen using SPF Protect Ultra™ III (ID: 35118), which is an oil-soluble sunscreen blend, you must use an oil-based gelling agent that can maintain clarity.
The most suitable base for this purpose is:
- Oil Thick™ Transparent (ID: 9310): This product is specifically designed to create a clear, high-viscosity oil-gel texture without turning cloudy.
Formulation Guidance for Clear Gel Sunscreen
Select a Light Emollient Oil: To achieve a light, non-sticky texture that "dissolves" or melts upon application (as requested), you should use a light, non-greasy oil as the main solvent for the sunscreen. Good options include:
- Caprylic/Capric Triglyceride (MCT Oil)
- Light esters (e.g., C12-15 Alkyl Benzoate, Isopropyl Myristate)
Mixing Process:
- Oil Phase: Mix the desired amount of SPF Protect Ultra™ III (ID: 35118) (up to 25%) into your chosen light emollient oil.
- Gelling: Add Oil Thick™ Transparent (ID: 9310) to the oil mixture. The usage rate will depend on the desired viscosity, typically starting from 1-5%. Heat the mixture until the gellant is fully dissolved and the mixture is clear, then cool while stirring to form the clear gel.
Alternative for Light Texture: If you prioritize a very light, non-greasy, and fast-absorbing feel over absolute clarity, you could consider using a Silicone Gel base, such as Silicone Gel (Capryl Methicone Base, Oil Dispersible) (ID: 10471), which is excellent for spreadability and a non-sticky finish. However, this specific type is described as cloudy, so it would not meet the "clear" requirement as well as Oil Thick™ Transparent.
Recommendation: For a truly clear gel, use Oil Thick™ Transparent (ID: 9310) with a light emollient oil.
