Zinc Oxide Particle Size (Micronized vs Nano) and Ingredient Sourcing

Question

I would like to inquire about the following:

What is the particle size of the Zinc Oxide (Micronized) product, and is it considered non-nano?
Could you provide detailed information regarding the source country or supplier for the ingredients to verify their safety?

Answer 1

Zinc Oxide Particle Size and Product Sourcing

Regarding your questions:

Zinc Oxide (Micronized) Particle Size: The Zinc Oxide (Micronized) product has a particle size typically ranging from 1 to 10 microns. According to the general definition, particles below 100 nanometers (0.1 micron) are considered nano-sized. Therefore, the Zinc Oxide (Micronized) product, with particles in the micron range, is considered non-nano.

We also offer other types of Zinc Oxide with different particle sizes, including nano-sized options like Zinc Oxide 35nm Liquid and Zinc Oxide (40nm, Triethoxycaprylylsilane Coated), as well as a non-nano option specifically recommended for "non-nano" claims, which is Zinc Oxide 200nm EasyDisperse™.
Product Sourcing and Safety Verification: We understand your concern about product safety. We carefully select our ingredients to ensure they meet quality and safety standards for cosmetic and food applications. However, specific detailed information regarding the source country or supplier for each individual ingredient is proprietary and not typically provided to end-users for verification through this platform. You can be assured that we strive to provide high-quality ingredients for your formulations.

Thank you for your kind words about the website!

Answer 2

Update as of 2026-05-31: The current catalog still describes Zinc Oxide (Micronized) as having particles not exceeding 45 microns, usually around 1-10 microns, so it remains non-nano under the common definition of nano as below 100 nm. Current catalog guidance positions Zinc Oxide (Micronized) mainly as an uncoated powder for uses such as deodorant, diaper rash, or antiseptic-type formulas, and notes that it is not the preferred Zinc Oxide for sunscreen formulas that need high dispersion. For sunscreen work, the current Zinc Oxide options include Zinc Oxide 200nm EasyDisperse™ for formulas that want a non-nano Zinc Oxide claim, plus nano/coated or dispersion options such as Zinc Oxide 35nm Liquid, Zinc Oxide (40nm, Triethoxycaprylylsilane Coated), Zinc Oxide (20nm, Triethoxycaprylylsilane Coated), Zinc Oxide 40nm Dispersion (Water Base), and Zinc Oxide Transparent Dispersion grades for lower whitening and easier dispersion.