lucid cover pearl powder - xentech.en.ec21.com€¦ · x e n t e c h c o., l t d. ... blurring skin...

X e n T e c h C o., L t d. R & D center for Advanced Materials

Jun. 2012

㈜ 젠 텍 XENTECH Co., Ltd.

신소재연구소 (R&D Center for Advanced Materials)

27-18, Songjeong-dong, Heungdueok-gu, Cheongju-si,

Chungbuk, 361-290, Korea

TEL; +82-43-238-9997 FAX; *82-43-238-9998

www.xentech.kr [email protected]

Lucid Cover Pearl Powder

– consisted of more than 50% of TiO2

with a Transparent look

for Soft Focus effect

http://www.xentech.kr/


The Main Concept of Soft-Focus effect Powder (1)

(1) Soft Focus Effect for Natural Finish Make up

○ Blurring skin troubles

like wrinkles, spots, pores, freckles….

○ Stable coverage not to stuffy &

Transparent look

(2) The Requirement items for Soft Focus Effect

○ Light Diffusion → for Hiding Skin Troubles

(Scattering)

○ Transmittance → for Natural Finish

Stable coverage

Transparent look

Soft Focus Powder

Too High

Transmittance

Opaque Look

1. The Concept of Soft Focus

2. The Required factor for Soft Focus Powder

Optimum thickness of Inorganics having High Refraction Index

→ High degree of light diffusion or scattering of incident light

→ Minimum of opacity

Optimum thickness of Inorganics having Low Refraction Index

→ High degree of light transmittance

Need to Adequate structure

→ Powder having multi-layered thin film

→ The alternate layer of Inorganics having

High & Low refractive index


Transmitted Light >> Reflected Light

Visible Wrinkle, Freckles, Pores, Spots

Natural Finish

Non-Make up Look

Low degree of

Reflected Light

High degree of

Transmitted Light

Incident Light

Transmitted Light << Reflected Light

Un-visible Wrinkle, Freckles, Pores, Spots

Un-natural Finish

Opaque Look

Diffuse Reflection Specular Reflection

in most cases

3. However, the Natures of General Powder are…

(1) Powder Having Low Refraction Index (Mica, Talc, Silica, PMMA Bead…)

Too little Light Diffusion (scattering) and Too High Transmittance

(2) Powder Having High Refraction Index (Al or Cu flake, TiO2, Iron oxides, ZnO …)

Too High Light Diffusion (scattering) and Too Low Transmittance

The Main Concept of Soft-Focus Effect Powder (2)

so, general powder cannot express soft focus effect


Soft feeling

Transparent look

Light Diffusion (Scattering) →

for Hiding Skin Troubles

Good Transparency →

for Natural Finish make-up

Platy structure ( size; 5~ 25㎛)

Low Refractive Index (n=1.5)

High Refractive Index (n=2.7)

Thin film

Low Refractive Index (n=1.5)

Very thin film

2nd, 4th layer ; SiO2

1st, 3rd layer ; TiO2

Core ; Mica

4. The structure of “Lucid Cover Powder” having Soft Focus Effect

The “Lucid Cover Powder” having Soft-Focus Effect (1)


Smooth Surface by regular coating process

Optimum Thickness of the coated layer

The alternately coated multi-layer of inorganics

having High & Low refractive index

Incident light

Specular reflection on the smooth surface

Transmitted light through thin film

→ Transparent look for natural make-up

→ Appropriate shining for a vivid hue of the face

5. The mechanism for Soft Focus Effect of “Lucid Cover Powder”

Diffuse refection through multi-layer

→ Stable coverage for blurring skin troubles

→ UV Protecting effect

The “Lucid Cover Powder” having Soft-Focus Effect (2)


The Optic Characteristics of “Lucid Cover Powder” (1)

Lucid Cover (TiO2 : 52wt%)

Lucid Cover (R) (TiO2 : 56wt%)

Natural Mica



TiO2 coated Mica (TiO2: 40wt%)

Transmittance Test Results (1) Method : Draw down test on the surface of glass(5mm)

Sample : 6wt% of powder in Nitrocellulose lacquer

Film thickness : 100㎛






TiO2 +Mica Mixing (50nm TiO2:

50wt%)

TiO2 +Mica Mixing (300nm TiO2:

50wt%)

Transmittance Test Results (2) Method : Draw down test on the surface of glass(5mm)





0

20

40

60

80

100

Lucid Cover

Lucid Cover(R)

TiO2 coated Mica Pearl

Silica Mica TiO2 Mica:TIO2 (1:1)mix

White base Black base

Total Refection Test Results Method : Draw down test on the White/Black base



Measuring instrument : Spectrophoto meter



0

20

40

60

80

100

0 20 40 60 80 100

Mica:TiO2 (1:1)

TiO2 coated Mica Pearl

Lucid Cover

Lucid Cover(R)

Mica

Silica

TiO2

Talc

ZnO

Sericite

Incident light

Tp

Td Td

Haze

Total Transmittance

Opacifiers’ zone

Fillers’ zone

Haze & Total Transmittance Test Results Method : Draw down test on the transparent film



Measuring instrument : Haze analyzer

Haze = (Td)/(Td+Tp) ×100 Total Transmittance = Td+Tp


Transparent

Opaque


The SEM Images of “Lucid Cover Powder”

SEM Image (x3,000) SEM Image (x25,000)


1. Product Name : Lucid Cover Powder

Trade Name

Components INCI Name CAS No. CI No. Composition(%)

Lucid

Cover

Powder

Mica Mica 12001-26-2 77019 29 - 46

SnO2 Tin Oxide 18282-10-5 77861 0 - 1

TiO2 Titanium Dioxide 13463-67-7 77891 47 - 57

SiO2 Silica 7631-86-9 - 7 - 13

Lucid

Cover (R)

Powder

Mica Mica 12001-26-2 77019 25 - 42

SnO2 Tin Oxide 18282-10-5 77861 0 - 1

TiO2 Titanium Dioxide 13463-67-7 77891 51 - 61

SiO2 Silica 7631-86-9 - 7 - 13

2. Composition

3. Structure : Mica/TiO2/SiO2/TiO2/SiO2/(alkyl silane)

Shell Matrix Structure (Core, 1st, 2nd, 3rd & 4th)

Core ; Mica

1st, 3rd shell : nano-sized TiO2

2nd, 4th shell : nano-sized SiO2

The Specifications of “Lucid Cover Powder” (1)


3. Typical Properties.

Description : Free flowing white powder

Hydrophilic (non-coated), Hydrophobic (alkyl silane coated)

L.O.D(130℃, 30min) < 2.0 %

Lead(Pb) < 5 ppm

Arsenic (As) < 2 ppm

4. Useful Characteristics.

Skin Affinity property

Silky Feeling

Natural Coverage & Scattering

UV Protecting effect

Soft Focus effect

5. Applications.

Liquid Foundation

Sun Care Lotion or Cream

BB Cream

Powder Foundation

Eye Shadow

Blush on Rouge

The Specifications of “Lucid Cover Powder” (2)

lucid cover pearl powder - xentech.en.ec21.com€¦ · x e n t e c h c o., l t d. ... blurring skin...

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