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SUNJIN NEWSLETTER
SUNJIN BEAUTY SCIENCE 经过过去三十多年的历练,今后将更加发展壮大的同时,也坚信会对韩国的化妆品及化学产业的发展做贡献。
 
Subject : 43_Selective Sebum Absorption
Date : 2016-04-03
May 2015, Newsletter no.45
Published by Sung-Ho Lee
 
   Selective Sebum Absorption
  Selective Sebum
Control
  Only absorbs oil but
not moisture
 
     
 
     
     What is ‘Selective Sebum Control’?  
 
     
 
No matter how old you are,
you might find yourself with
the oily, pore-clogged skin
that leads to acne. Oily skin
is a result of excess sebum
production from sebaceous
glands on the face, neck,
chest and back. Excess
sebum production is in part
because of hormones and
hereditary factors and
commonly persists beyond
adolescence. Fortunately,
there are a variety of
effective ways to control
sebum and clear oily skin,
regardless of the forces that
cause it.
 
http://www.ehow.com/how_
7341924_control-
sebum.html
 
Need to absorb not moisture
but sebum
on skin
Selectively
 
     
 
 
     
 
   SUNJIN offers various grades of POROUS  PMMA BEADS
 
       
 
INCI:
Methyl Methacrylate Cross
Polymer
 
  Grade   Avg. Particle
   size(㎛)
  Oil Absorption
  (cc/g)
  SUNPMMA-P20 2 1.7~2.1
  SUNPMMA-COCO130 8 1.2~1.4
  SUNPMMA-COCO170 8 1.6~1.8
  SUNPMMA-P 8 1.7~2.1
  SUNPMMA-PH 8 2.1~2.4
 
  New in 2015
 
 
 
 
       
   
     
SUNPMMA PH  
  2.4
SUNPMMA P  
  1.89
COCO170  
  1.72
COCO130  
  1.34
SUNPMMA-S  
  0.45
 
       
 
 
     
 
   Characteristics of Porous PMMA: 1)Selective Absorption
 
 
       
Porous PMMA,
especially good for
- Sebum control skin
   care
- Men’s skin care
For its excellent feel
and spread
without
skin dryness
 
   
  3min
   
Porous PMMA
WATER D5* LP**
 
Porous PMMA absorbs oils fast but not water
 
Porous Silica
WATER D5 LP
 
Porous Silica absorbs oils & water fast

-> Skin feels dry
 
3min
 
 
     
  Selective Sebum
Absorption for
Skin Care
 
   
 
*D5:Cyclomethicone
**LP: Liquid Paraffin
 
 
 
     
 
 
 
 
Question
 
Aston Chemicals Ltd
Date of lssue: January 2015
Author: Loma Radford
 
  SUNPMMA-P is a Methyl Methacrylate Crosspolymer
microsphere that can selectively absorb sebum on the
skin.

However, does this mean that SUNPMMA-P will absorb
the oil phase of a formulation?



If it absorbs oil in the formulation then
will that prevent it from absorbing sebum
on the skin?


How should the SUNPMMA-P be added to a
formulation to prevent this from happening?
 
 
 
     
 
  Test Result  
 
 
Conclusion
PMMA in an O/W
emulsion can absorb
squalane
(the most
similar to sebum that we
could achieve in this
investigation) on the skin.

Squalane was spread on
the skin and then photos
over time showed that a

lotion containing
PMMA reduced the
shine from the
squalane
more quickly
and more effectively than
the control lotion,
indicating absorption of
the squalane by PMMA.
 
Aston Chemicals Ltd
Date of lssue: January 2015
Author: Loma Radford
 
 
 
 
 
 
5min
 
 
 
15min
 
 
 
 
 
 
 
     
 
   Confirmed by SUNJIN
 
 
 
Squalane
on Skin
 
        30sec   60sec  
O/W Essence
Base
 
     
 
 
O/W Essence with Porous
PMMA-P 4%
       
  Selective Sebum Absorption
& Fast Absorption
 
 
 
     
 
   Characteristics of Porous PMMA: 2)Media Dispersibility
 
 
 
Best recommend for
(1)Spray
(2)Shaking toner
 
 
Water/EtOH dispersible porous PMMA
     
  Powder 10%, EtOH 10%, Water 80%
3 Month Later, upside down test
 
 
1. Urethane Bead A
2. Urethane Bead B
3. COCO 130(porous)
4. Nylon 12 Powder
5. SUSNIL 130NP
6. SUNPU170
7. SUNPMMA-S
8. SUNPMMA-PH(porous)
9. PE Bead
10. SUNSIL 130H
11. SUNPMMA-P(porous)
12. SUNSIL 130
  No Good
No Good
Good
No Good
O.K.
No Good
No Good
Good
No Good
No Good
Good
No Good
 
Porous PMMA Beads have
shown excellent

re-dispersibility
 
 
   
 
 
 
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