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SUNJIN NEWSLETTER
 
Subject : 2015.12_Micro Beads without balling up_Series4
Date : 2015-12-14
December 2015, Newsletter no.75
Published by Sung-Ho Lee
     
 
   Micro Beads without Balling up
   New in 2015
  How to stop
Balling Up/Peeling from Skin care?
 
     
 
  READER QUESTION : HOW DO I STOP MY
  SUNSCREEN (OR ANY OTHER SKIN PRODUCT)
  FROM BALLING UP AND PILLING ON MY FACE?


    MICHELLE VILETT. JUL 29,2010
     
 
   
Ive been having a problem w/ zinc based sunscreens
in that when applied, they ball or pill off the face. I
know it must be applied in a light and careful manner,
but Im still having problems. The few times Ive
been able to apply it correctly, it ends up
balling/pilling off when I attempt to apply my
face powder. Any tips on how to avoid this?
 
http://beautyeditor.ca/2010/07/28/reader-question-how-do-i-stop-my-
sunscreen-or-any-other-skin-product-from-balling-up-and-pilling-on-my-face
   
       Why does this happen?
   
 
 
 
     
 
   Balling Mechanism
 
 
1. Polymeric Thickener   2. Big size particles(ex: Micro Beads)
 
    Balling comes from entangled
net like polymeric thickeners

Entangling polymer thickeners
can be snowballed by big
particles in formula such as
pigments or micro beads

 
 
 
     
 
   Case Study: Carbomer 0.2% + Micro Beads 15%
 
 
Tested Lotion formula
 Product Name ;%
 Water
 1% Carbomer
52.2
20
 DS
 ARACEL 165
 Tween 60
10
2
0.7
 TEA 0.1
 Micro beads 15
 
Micro Beads  
 
 
   
     Carbomer  
 
   
     
 
 
     
 
   PMMA Beads
 
 
 
In general, the bigger sized PMMA beads show the more immediate balling-up
 
However, PMMA bead of average particle size of 3μm does not show ball-up even after severe rubbing on skin
   
Lotion
BASE
 
3μm PMMA
15%
 
5μm PMMA
15%
 
10μm PMMA
15%
 
20μm PMMA
15%
 
  20 sec   40 sec   60 sec
 
 
 
     
 
   Silica Beads
 
 
 
        15 sec   30 sec   45 sec   60 sec  
In general, the bigger Silica beads show the more immediate balling-up
 
However, SILICA BEAD of average particle size of 2μm does not show ball-up even after severe rubbing on skin
Lotion
BASE
2μm Silica
SUNSIL 20
15%
 
7μm Silica
SUNSIL 130
15%
 
15μm Silica
SUNSIL 150H
15%
 
   
 
 
     
 
   2um Micro Beads for Skin Care
 
 
     
SUNJIN is happy to provide 2μm small sized micro beads for skin care that does not ball-up even after severe rubbing on skin
   Grade    Descriptions   Avg.
   Particle
    size(㎛)
  Oil
   Absorption
   (cc/g)
   SUNSIL 20    Porous Silica    2    0.9~1.3
   SUNPMMA-P20    Porous PMMA    2    1.7~2.1
 
   
  Basket Ball
= Balling up
 
  Tennis Ball
= NO Balling up
 
 
 
     
     
 
 
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