Moment of Truth - Our Particle Sizes

I wanted to follow up on our Response to Dr. Oz Blog.  It is one thing to sit and say what we use and don't use, but as reputable small-business owners, we need to lay it on the line... Truth in Labeling and Full Disclosure. It is your right as a consumer to know what you are putting on your face and body.

At Saphoros, we believe in truth in labeling and full disclosure. In light of all the controversy over nanoparticles, particularly in loose powder formulations, we felt we should provide information to our clients and to the public regarding the particle sizes of the ingredients we use, and even a few that we don't that people are questioning. The bottom line is NO... We do NOT use nanoparticles in Lueur Jeune formulations.

The particle size information listed in the chart below was obtained from our supply manufacturers.

Particle Size Chart

Powder	Size in Micrometers (or Microns, symbolized with µm)	Size in Nanometers (symbolized with nm)	Notes
Sericite Micas Treated with Carnauba Wax or Jojoba	11-16 µm	11,000-16,000 nm
Regular Titanium Dioxide (Oil and Water Dispersible)	1-2 µm	1,000-2,000 nm
Regular Zinc Oxide	325 mesh (US Standard) (equates to  approx 44 µm)	Approx 44,000 nm	Mesh sizes are not exact measurements for microns. For a better explanation and a conversion chart, please visit here.
Plain, Untreated Sericite Mica	4.5-11.5 µm	4,500-11,500 nm	The most commonly available form ranges on the smaller end of the micron scale. The untreated sericite we use has an average micron size of 11.5.
Silica	4-20 µm	4,000-20,000 nm	We use several sizes of silica, and average particle size varies with each - the smallest being 4 µm and the largest averaging 20µm
Boron Nitride	6-30 µm	6,000-30,000 nm	We use 4 sizes of Boron Nitride, with the smallest particles averaging 6 µm and the largest at 30 µm
Colored Micas	10-150 µm	10,000-150,000 nm
Silk Powder	2-4 µm	2,000-4,000 nm
Pearl Powder	2-4 µm	2,000-4,000 nm
Diamond Powder	3 µm	3,000 nm
Kaolin Clay	1-4 µm	1,000-4,000 nm
Silk Mica	17-26 µm	17,000-26,000 nm
Pigments (Iron Oxides, Ultramarines, etc)	1-2 µm	1,000-2,000 nm
Talc	6-8 µm	6,000-8,000 nm	Not used in any of our loose powder formulations
Z-Cote Zinc Oxide	0.2 µm	200 nm	Not currently used in any of our formulations
Zinc Stearate	6-7 µm	6,000-7,000 nm
Lo-Micron Zinc Oxide	0.31 µm	310 nm	Not currently used in any of our formulations
Magnesium Stearate	6-7 µm	6,000-7,000 nm
Calcium Carbonate	4-6 µm	4,000-6,000 nm
Rice Powder	7-11 µm	7,000-11,000 nm	Not currently used in any of our formulations
Magnesium Myristate	5-6 µm	5,000-6,000 nm