clarifying bv osc - kingdomofyork.comkingdomofyork.com/skinsnob/bv-osc.pdf · the absorption of...

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BARNET The information contained in this technical bulletin is, to the best of our knowledge, true and accurate. No warranty, expressed or implied is made or intended. The use should be based upon the customer’s own investigations and appraisal. No recommendation should be construed as an inducement to use a material in infringement of patents or applicable government regulations. October 2015 BVOSC A Quasi Drug Whitening Benchmark Superior Skin Penetration Compared to Other Whiteners Reduces Age Spots Great Stability in Formulas CLARIFYING O O RO OR CHCH 2 OR H OR

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Page 1: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

BARNET

The information contained in this technical bulletin is, to the best of our knowledge, true and accurate. No warranty, expressed or implied is made or intended. The use should be based upon the customer’s own investigations and appraisal. No recommendation should be construed as an inducement to use a material in infringement of patents or applicable government regulations.                                                  October 2015

BV‐OSC A Quasi Drug Whitening Benchmark

Superior Skin Penetration Compared to Other Whiteners

Reduces Age Spots

Great Stability in Formulas

CLARIFYING

OO

R O O R

CHCH2OR

H OR

Page 2: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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CONCEPT

Whitening is the number one category in skin care in Asia.  In Japan a whitening formula must contain a quasi‐drug active (QD).  The QD list is decided by the governmental administration in Japan.  In Korea there is also an official list of Functional Actives.

To develop an active ingredient for whitening it is important to have it on those lists.  The active also has to be very easy to use, stable, and with good delivery potential to penetrate into the skin.  Ideally the whitening active could be used at or close to the skin’s natural pH.

An ingredient with all the above would be a benchmark.  This is BV‐OSC, an oil‐soluble ester of ascorbic acid.

OO

R O O R

CHCH2OR

H OR

Page 3: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC was proven to have a strong whitening effect for UV induced pigmentation. The results showed that the formulation containing BV‐OSC (3.00%) significantly reduced UV induced pigmentation compared to the placebo. 

INGREDIENT A B             

PHASE ACeteth‐20 1.00 1.00Sorbeth‐30 Tetraoleate 0.50 0.50Glyceryl Stearate 1.00 1.00Cetanol 5.00 5.00Squalane 10.00 10.00Isocetyl Myristate 6.00 6.00Triethylhexanoin 3.00 3.00Jojoba Oil 1.00 1.00Dimethicone 0.20 0.20Tocopherol 0.10 0.10Preservative 0.10 0.10BV‐OSC ‐‐‐‐‐ 3.00

PHASE BWater 61.90 58.90Xanthan Gum (2% aq.) 5.00 5.00Butylene Glycol 5.00 5.00Preservative 0.20 0.20

Placebo

BV‐OSC

BV‐OSC at 3% (QD in Japan)30 people – 3 weeks Vitamin C Ester

Page 4: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC AT 10% ON AGE SPOTS10 people – 16 weeks

Before                                                                                       After

BV‐OSC was tested in vivo to effectively remove age spots.  The test was performed on 10 people for a sixteen week period at a concentration of 10%.

Page 5: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

5

BV‐OSC AT 10% AND 30% ON AGE SPOTS20 people, 12 weeks

Measurements:

1.  L* value:  Chromameter CR‐400 (Minolta, Japan)

2.  The selected tests are as of UV mode image and were evaluated by two experts using the grading scale below (0‐7) at baseline, after 4 weeks, 8 weeks and 12 weeks.

0    None1 None / mild hyper pigmented2 Mild hyper pigmented3 Mild / moderate hyper pigmented4 Moderate hyper pigmented5 Moderate / severe hyper pigmented6 Severe hyper pigmented7 Very severe hyper pigmented

The purpose of this clinical study was to evaluate the clinical efficacy of high concentration of BV‐OSC in improving skin brightness of senile lentigo (aging spot) on female skin. * All volunteers recruited through the preliminary selection visited the research center for physical examination, medical history and visual evaluation of the test area by dermatologists.

Three formulas were used (Placebo, 10% BV‐OSC and 30% BV‐OSC).  20 female volunteers were selected for each formula.

Page 6: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC AT 10% AND 30%

95

96

97

98

99

100

101

102

103

0 weeks 4 weeks 12 weeks

Placebo

10% BV‐OSC

30% BV‐OSC

L* Value

 (% of O

W)

L* Value

Results show that 10% BV‐OSC was efficient in                                         improving the lightening of the skin.

Page 7: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSCPigmentation of BV‐OSC at 10% and 30% ‐ 2015 test

85

90

95

100

105

0 weeks 12 weeks

Placebo

10% BV‐OSC

30% BV‐OSC

Visual grade

 index (%

 of O

W)

Visual Assessment

BV‐OSC significantly improved skin pigmentation in a dose dependent manner.

Page 8: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC AT 30%

Baseline (0 week) After 12 weeks

Pictures are an example of a significant reduction in the size of age spots.

Page 9: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC REDUCES DENDRICITY AT 2%

Protocol:

The 3D skin model containing melanocytes (MEL) was cultured EPI‐100LLMM.Test samples were applied from top of the skin model and melanocyte morphology was evaluated after 1 week. Melanocytes were stained with 0.1 % L‐3,4‐Dihydrophenylalanin (L‐DOPA) and their shape was observed via microscope. 

Test samples: BV‐OSC 2%Vehicle: Ethylhexyl Palmitate (ester oil)

Shape of melanocyte in 3D skin model

Control (0% BV‐OSC)

2 % BV‐OSC.  Clearly less dendricity

Page 10: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC AND TYROSINASE INHIBITION

BV‐OSC was added to melanoma cells (B16‐4A5) at various concentrations.  After a 72 hour cultivation, the cells were dissolved and extracted.  L‐Dopa (a precursor of melanin) was then added to the extract.  After 60 minutes at 37°C, the amount of dopachrome formed by the activity of tyrosinase was evaluated by measuring its absorbance at 540 nm.  The graph above shows that a concentration of 0.02% BV‐OSC and above inhibited the activity of tyrosinase.

60

70

80

90

100

0 0.02 0.05 0.1

Tyrosina

se Activity

 (%)

BV‐OSC (%)

Page 11: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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Various concentrations of BV‐OSC were added to cultured human melanoma cells (HM‐3‐KO).  After 4 days of cultivation, the amount of melanin produced was measured by observation of the color tone of each cell pellet.  As shown, BV‐OSC effectively inhibited melanogenisis in human melanoma cells in a dose dependent manner.

0

10

20

30

40

50

60

70

80

90

100

0% 0.01% 0.01% 0.05% 0.10%

Melan

in Amou

nt (%

)

BV‐OSC Use Level

BV‐OSC:  INHIBITION OF MELANOGENESIS

Page 12: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC:  ABSORPTION EVALUATION

The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration of ascorbic acid 2 hours after adding BV‐OSC.  As shown, the intake of ascorbic acid was much greater after the addition of BV‐OSC as compared to L‐ascorbic acid by itself.  It was proven that BV‐OSC breaks down into Ascorbic Acid inside the cells.

0

2

4

6

8

10

12

14

5 10 20 50 500

Ascorbic Acid conten

t in cell 

(pmol/ 1

06cells)

Concentration (uM)

BV-OSC Ascorbic Acid

Keratinocyte Absorption

0

2

4

6

8

10

12

5 10 20

Concen

tration of Ascorbic Acid

(nmol/ 1

06cells)

Concentration (mol/L)

BV-OSC Ascorbic Acid

Fibroblast Absorption

Page 13: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC:  SKIN PENETRATION EVALUATION                     (ASCORBYL GLUCOSIDE AND BV‐OSC)

Skin penetration of BV‐OSC and Ascorbyl Glucoside was evaluated on 8 volunteers.  A cream containing 10% of each was applied on the forearm and let sit for 1 hour.  Tape strippings were performed 20 times and the amount of BV‐OSC and ASG collected was evaluated by HPLC.  As seen in the graph above, BV‐OSC had better penetration results.

Skin Penetration Evaluation (Ascorbyl Glucoside and  BV‐OSC)

0

50

100

150

200

250

300

350

2-5 6-10 11-15 16-20

Col

lect

ed a

mou

nt (m

g)

Number of Tape Strippings

BV-OSC ASG

525

440

0

100

200

300

400

500

600

Col

lect

ed a

mou

nt (m

g)

Accumulated Deposition

BV‐OSC

Ascorbyl Glucoside

Page 14: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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IMPROVING BV‐OSC PENETRATION

A study was conducted using human skin comparing the percutaneous absorption of topically applied BV‐OSC (5 µM) from cream formulations containing 2% Polyolprepolymer‐2 and 2% Polyolprepolymer‐15 follow a 24 hour exposure.  The results showed an increased presence of BV‐OSC in the epidermis and dermis compared to the cream without Polyolprepolymers.

12

0.6 0.009

18

2.4

0.006

22

1.7

0.0080

5

10

15

20

25

Epidermis Dermis Receptor

0% Polyolprepolymer 2% Polyolprepolymer‐15 2% Polyolprepolymer‐2Percutaneo

us absorption rate (%

)

Page 15: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC:  ANTI‐OXIDANT PROPERTIES

Human keratinocytes were treated with various vitamin C derivatives for 24 hours.  After treatment of H2O2 and t‐BHP cell survival was estimated.  As seen above, BV‐OSC showed the highest efficacy in cell viability. 

0

20

40

60

80

100

120

Control VC‐Na MAP AscorbylGlucoside

BV‐OSC

Vitality (%

)

Protection of Cell Damage induced by H2O2

0

20

40

60

Control VC‐Na MAP BV‐OSC

Vitality (%

)

Protection of Cell Damage induced by t‐BHP (tert‐butylhydroperoxide)

.002% .0029% 0.01% 0.01%.0033%

Page 16: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC:  DNA PROTECTION – UV‐A

Protection of Cell Damage                         Induced by UVA

Microscopic pictures of  keratinocytes 24 hours after irradiation.  BV‐OSC treatment reduces cell death by 31.5%.

No UVA                       UVA                                 UVA + BV‐OSC 80 mM

The light parts on the pictures (taken 1 hour after of UVA irradiation) indicate 8‐hydroxyguanosine, an index of DNA damage. The application of BV‐OSC inhibits the release of 8‐hydroxyguanosine, thereby protecting the cell against UVA damage.No treatment                             BV‐OSC (80 μM)      

Inhibition of Keratinocytes DNA Damage Induce by UVA

Page 17: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC:  DNA PROTECTION – UV‐B

DNA damage was evaluated by the comet assay.  HaCaT keratinocytes were treated with Vitamin C derivatives for 24 hours, were exposed to UVB at 100 mJ/cm2.  As seen in the results above, BV‐OSC was the most effective form of Vitamin C for protection against DNA damage.

Suppression of DNA Damage Induced by UVB (Comet Assay)

BV‐OSC Comet Assay

40

60

80

100

No UVB Control AscorbicAcid

AscorbylGlucoside

MAP BV‐OSC

DNA migratio

n (µm)

Control (No UVB)

UVB 10mJ/cm2 + BV‐OSC (100 mM)

UVB 10mJ/cm2

Page 18: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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CONCLUSION

BV‐OSC:

Reduces melanin synthesis by 80%

Reduces age spots

Reduces UV‐induced pigmentation

Penetrates the skin 50 times better than Ascorbic Acid and 4 times better than MAP

Tested in vivo to penetrate better than Ascorbyl Glucoside

Superior stability in formulas

Page 19: CLARIFYING BV OSC - kingdomofyork.comkingdomofyork.com/skinsnob/BV-OSC.pdf · The absorption of BV‐OSC into human dermal fibroblasts and keratinocytes was measured as a concentration

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BV‐OSC

INCI Name:  Tetrahexyldecyl AscorbateREACH Status: RegisteredCanada DSL: Listed RICL (Revised In Commerce List)China Registration: All components are listed in the Inventory of 

Existing Chemical Substances in China (IECSC) and the Inventory of Existing Cosmetic Ingredients in China. (IECIC).

Suggested Use Level: 0.1% ‐ 100.0%Solubility: OilQuasi‐Drug: Approved as a quasi‐drug in Japan at 3%

Approved as a quasi‐drug in Korea at 2%

OO

R O O R

C H C H2O R

HO R