Nylon-12 is the best known and the most widely used microsphere employed in cosmetics. First used in the mid-1980s, Nylon-12’s “ball bearing” effect became ubiquitous in pressed and loose powders and then spread further into liquid makeup and creams, lotions and other products.i
The spherical shape of the particles in Ally-Nylon12 imparts an elegant silky texture, improved slip and better blendability for a more natural finish.ii Use levels range from 1 – 50% by weight. Nylon-12 can provide a non-tacky, velvety, or powdery after feel, going from the lowest to the highest use levels. It is often used as the primary ingredient in cream-to-powder products. The optimum spherical particle size for a microsphere to exhibit the highest ‘slip’ is 10 – 20 microns.iii Ally-Nylon12 has an average particle size that fits this range perfectly. Of all the uncoated microspheres, nylon imparts the creamiest feel and is the most effective at reducing tackiness. Pressed powder eyeshadows especially benefit from this extra creamy feel.
A property of microspheres, Nylon-12 in particular, that is used to great advantage in many products is their ability to scatter light. This effect substantially reduces the appearance of fine lines on the skin: the “optical blurring” or “soft focus” effect.iv
Since the density of Ally-Nylon12 is significantly lower than the typical talcs, clays mica, kaolins and other minerals it is used to replace, the resulting products have a lighter feel on the skin. This can be a large benefit for makeup products that are applied in relatively high amounts and/or products that have very high ‘coverage’.
Anhydrous products too can benefit from the feel imparted by Ally-Nylon12. Lipsticks, blushers and lip balms formulated with 2 – 5% Nylon-12 will have easier, more uniform application.
Consumers often complain about the difficulty of uniform application and the final feel of sunscreens from almost all delivery forms. Ally-Nylon12 can greatly improve these aspects.
In nail care products, Nylon-12 can function to improve nail strength.v
|Microbiology:||Total aerobic plate count: <100cfu/g Pathogens: none detected≤100cfu/g|
|Shelf life:||Unopened, 36 months from date of manufacture|
|Storage:||Store in a cool, dry place, away from sunlight|
(Not to be used as specifications)
|Appearance||Soft white powder|
|Odor||Odorless or nearly odorless|
|pH:||6.0 – 7.5|
|Apparent density, packed||0.28g/cm3|
|       Average||8 – 12 microns|
|       <5 micron||0.0 – 4.0%|
|       >20 micron||0.0 – 2.0%|
|Surface area||2.5 – 5.5 m2/g|
i Encyclopedia of Polymer Science and Engineering. John Wiley & Sons, 1985, p752
ii W Griehl, D Ruestem. Nylon 12-Preparation, Properties, and Applications. Industrial Engineering Chemistry Research, 1970, vol. 62, pp 16–22.
iii Y Shao, D Pekarek. Microspheres, chapter 38 in The Chemistry and Manufacture of Cosmetics, Volume III, Ingredients, 3rd edition. M. Schlossman, ed. Allured Publishing, 2002
iv https://www.olay.com/en-us/skin-care-products/regenerist-micro-sculpting-cream-moisturizer. Proctor & Gamble. Retrieved September 30, 2017.
v D Garlen. Nail Polishes, chapter 27 in Harry’s Cosmeticology, 8th Ed., M Rieger, ed. Chemical Publishing Co. 2000, p582