Face Powder for Very Sensitive Skin Using Japanese Rice Flour

• Using Japanese Rice Flour on Sensitive Skin

  For very sensitive skin, directly using food-grade Japanese rice flour on the face as powder is not recommended.

  • Reason: Food-grade rice flour is not processed to the same purity and particle size standards required for cosmetic use, especially on delicate skin. It may contain impurities or microorganisms that could cause irritation or bacterial growth on the skin. Additionally, the particle size of food flour might be too large, feeling rough or uncomfortable on the skin.

• Recommended Alternative: Cosmetic-Grade Rice Powder

  There are rice powders specifically processed for cosmetic use, such as Ricesorb ™. This is a rice starch derived from Japanese rice flour, processed to high purity by removing proteins and reducing particle size to less than 10 microns. This gives it excellent oil absorption properties without drying the skin like talc, and it is highly gentle, making it suitable for sensitive skin. It can be used as a primary ingredient in face powder.

• Shelf Life

  Cosmetic-grade rice powder produced under standard conditions has a much longer shelf life than food-grade rice flour. Generally, it can be stored for at least 2 years if kept in a dry place at room temperature, with the container tightly sealed and protected from sunlight and heat.

  However, pure powders like Ricesorb ™ typically do not contain preservatives themselves. If you mix it with other ingredients in a face powder formulation, you should consider using appropriate cosmetic preservatives to prevent microbial growth. This will help extend the shelf life of the finished product and ensure safety for skin use.

• Conclusion: For maximum safety and effectiveness on sensitive skin, it is best to choose rice powder specifically manufactured for cosmetic use rather than using food-grade rice flour directly.