Sunscreen Formulation: Adding PowderCream, Color, and Achieving Waterproof/Long-lasting Properties
Asked by: jidapa_chat
On: December 26, 2015
Product Type:
Cosmetics
Question
I have questions regarding sunscreen formulation:
- If I want to add PowderCream, at which step should I add it? I am confused between adding it to the water phase and warming it, or adding it when both phases are combined. Which method should I use?
- How much Beige Iron Oxide (color) should I add?
- If I want the sunscreen to be long-lasting, waterproof, and not smudge when sweating, what should I do?
Answer
Subject: Regarding PowderCream in sunscreen formulation
Hello,
Based on the information provided:
- Adding PowderCream: You should mix PowderCream with water first. The water will turn into a liquid gel. Then, incorporate this mixture into your formulation as usual.
- Amount of Beige Iron Oxide: The amount depends on the desired color intensity. Start with 0.5% and gradually increase until you achieve the desired shade for your skin tone.
- Making the sunscreen long-lasting and waterproof: To achieve a long-lasting and waterproof sunscreen, it is recommended to formulate it as a water-in-oil (W/O) emulsion instead of an oil-in-water (O/W) emulsion (which is typically made with Light Cream Maker). For a W/O formula, you can consider using emulsifiers like Water-in-Oil EZ or water capsule for a light texture, or oil cream maker for a heavier texture.
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