Korean Patent Registered No. 10-2007-0083469

      US Patent Application No. 11/872,456

        “POLYMER COMPOSITE PARTICLES CONTAINING

        SUNSCREEN AGENT AND MANUFACTURING METHOD

        THEREOF”

      Japanese Patent Application 特願 2007-272539

Diminished skin irritancy

   • The encapsulation of UV filters inside PMMA bead reduces dermal uptake,

     thereby reducing the potential for irritation

   • The encapsulation of UV filters eliminates distribution of the organic filter in the

     skin layers so good for Sun Cares for Sensitive Skin Types

Excellent sensorial feeling

   • Most chemical filters are very oily and leave behind an unpleasant, sometimes      sticky feel on the skin

   • Hybrid PMMA has the excellent skin feel of PMMA bead which is frequently used      as a texture additive, and therefore lend the formula a soft-touch effect

Good for W/Si formula &    O/W formula

   • BMDBM is not soluble to silicone oils so BMDBM is extremely difficult to be      incorporated into silicone based formula

   • While Hybrid PMMA that contains BMDBM can be easily incorporated into

     silicone oils by simple mixing

   • Can be easily incorporated into water phase so very useful for O/W formula

   • Stable in the broad pH range, i.e. in a pH of approximately pH 1.0 – 14.0.

Improved photo-stability

   • BMDBM is segregated, immobilized inside solid PMMA matrix so the contacts      between UV filters and skin are avoided completely- the cause of instability and      odor problems can be ruled out entirely

Physically stable

   • Unlike to conventional encapsulated products, Hybrid PMMA is physically      unbreakable

   • Physical shape of PMMA hybrid bead maintained during high shear stress test

     or by topical pressure after in vivo application

Long Lasting UV protection    like physical filter

   • Unlike chemical sunscreens that sink into the skin and absorb radiation as it hits,      these ingredients sit on top of your skin, forming an almost invisible physical      barrier against UV rays.

Test Condition:

Sample size:5 subjects(Korean)

Study Design:Patch test

Application time:72hr

Dosage:25㎕

Photodegradation of Avobenzone can be blocked because nano sized Avobenzone crystals are immobilized in solid PMMA matrix

OMC/avobenzone combination is well known to be not amenable to photostabilization unless segregated by some means such as encapsulation.