Treated pigments

NAI | Amino Acid Treatment


  • Strong hydrophobicity

  • Skin affinity / skin-friendly

  • Long lasting

  • Gives comfortable feeling to formula

  • Highly stable in emulsion

INCI NAME : Disodium Stearoyl Glutamate (and) Aluminum Hydroxide (and) substrate*

General informations

Over 15 years ago, Miyoshi Kasei introduced its novel Amino Acid surface treatment technology for cosmetic applications. This patented technology, designated NAI is based on the chemical bonding of Disodium Stearoyl Glutamate to pigments and substrates. The NAI treatment was quickly embraced worldwide because of its unique benefits. The Compatibility of NAI treated pigments in emulsion systems has been amply demonstrated by their usage in a number of commercially available foundations. NAI is longwearing and provides a moist, dewy feel while being much easier to disperse in oils and silicones.

MIYOSHI EUROPE is the 1st treated pigment manufacturer to obtain the “Microbiome-friendly” certification for it’s amino-acid treated pigments.

*Substrate could be iron oxides, titanium dioxide or fillers.


Our expertise at your service ! Test this product for your projects :


Hyper fluid foundation 


High natural origin content formulas 

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