Sunscreen Formulation with Coverage for Oily Skin (W/O Emulsion)
Question
Could you please provide a formula and mixing instructions for a sunscreen suitable for oily skin that provides coverage? The formula should be a water-in-oil emulsion and include specific ingredients like Titanium Dioxide and Mica Powder. Please also specify the mixing procedure, including temperatures and blending speeds if necessary.
Answer
Based on the staff's recommendation, here is a suggested formula and the mixing instructions for a sunscreen suitable for oily skin with coverage:
Recommended Formula:
- Water-in-Oil EZ: 3%
- Polyethylene Wax: 2%
- Beeswax: 2%
- LipidSoft Disperse: 5%
- Silk Mica Powder: 15%
- Phenoxyethanol SA: 1%
- Titanium Dioxide 15nm Liquid: 10%
- Water: Remaining percentage (approx. 62%)
Color Adjustment (Adjust percentages as needed for desired skin tone):
- Beige Iron Oxides EasyMix: % (Adjust for darker tone)
- Titanium Dioxide 200nm EasyDisperse: % (Adjust for lighter/brighter tone)
Mixing Instructions:
- Combine the oil phase ingredients: Water-in-Oil EZ, Polyethylene Wax, Beeswax, LipidSoft Disperse, and Titanium Dioxide 15nm Liquid. Heat this mixture until everything is melted and combined.
- While the oil phase is hot and melted, add the powders: Silk Mica Powder, Beige Iron Oxides EasyMix (adjust amount for color), and Titanium Dioxide 200nm EasyDisperse (adjust amount for color). Blend until well combined.
- Heat the water phase (Water) to a temperature close to the oil phase.
- Slowly add the heated water to the oil phase while continuously blending at a speed of at least 500 RPM. Continue blending until all the water is incorporated and a cream texture is formed.
- Turn off the heat and add Phenoxyethanol SA. Blend until well combined.
Regarding the blender wattage, the staff did not specify a required wattage, but mentioned the need for a blender and a minimum speed of 500 RPM for the water addition step.
Related Products Mentioned
Beige Iron Oxides EasyMix™
Titanium Dioxide 15nm Liquid (Gloss)
