innovative polymers for cosmetics. beauty made...

Innovative polymers for cosmetics. Beauty Made Possible.

Covestro Deutschland AGBusiness UnitCoatings, Adhesives, SpecialtiesD-51368 [email protected]

This information and our technical advice – whether verbal, in writing or by ways of trial – are given in good faith but without war-ranty, and this also applies where proprietary rights of third parties are involved. The information is provided by Covestro without assumption of any liability. If any of the above mentioned regulations change after the date of declaration, this declaration is no longer valid. Covestro will strive to keep this information up-to-date. Our advice does not release you from the obligation to verify the information provided – especially that contained in our safety data and technical information sheets –, to check for updates of any information provided by us and to test our products as to their suitability for the intended processes and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore, entirely your own responsibility. Our products are sold in accordance with the current version of our General Conditions of Sale and Delivery. Edition: 2018-03 · Order-No.: COV00084332 · Printed in Germany 2018 Technical Brochure

Contents

Baycusan® product portfolio

Key features

04

06

SunCare 08

SkinCare 16

ColorCosmetics 24

HairCare 32

Around the world, notions of beauty are as colorful as the people who pursue them. There is certainly more than just one kind of beauty, and everybody has their own idea of what beauty involves. Although personal definitions may differ, one aspect remains the same: everyone wants to be beautiful in some way. And that’s what Baycusan® is all about – enabling individual beauty through your products.

Baycusan® is your key ingredient for creating products that enable people to be as beautiful as they would like to be. We are passionate about inventing products – for you and together with you – that expand the possibilities for being beautiful. We like to keep raising the bar, re-inventing and perfecting, so that in the end it’s not just products but Beauty Made Possible.

»There is a road from the eye to the heart that does not go through the intellect.«

Baycusan® product portfolio

The Baycusan® product portfolio features water-based polyurethane polymers and ethanol-based polyurethane polymers – all carefully developed for superior performance.

Baycusan® INCI Name Solids [%] Avg. particle size [μm] pHViscosity

[mPa·s]

Water-based polymers

C 1000* Polyurethane-34 40.0 ± 2.0 - 7.5 ± 1.0 ≤ 500

C 1001* Polyurethane-34 32.0 ± 2.0 - 7.5 ± 1.0 ≤ 1000

C 1003* Polyurethane-32 50.0 ± 2.0 - 7.5 ± 1.0 ≤ 1000

C 1004* Polyurethane-35 41.0 ± 2.0 - 7.5 ± 1.0 ≤ 500

C 1008* Polyurethane-48 30.0 ± 2.0 - 7.0 ± 1.5 < 1000

C 1010 Polyurethane-35 40.0 ± 2.0 - 7.0 ±1.0 ≤ 1000

Ethanol- based polymer

C 2000 Polyurethane-64 40.0 ± 5.0 - - < 10000

Baycusan® SkinCare SunCare HairCare ColorCosmetics

C 1000*

C 1001*

C 1003*

C 1004*

C 1008*

C 1010

C 2000

especially suitable

suitable* Also commercially available with 1.5% antimicrobial additive under the name Baycusan® C/1.

Applications

4

Key features

SunCare

– (Salt) water resistance– Sweat resistance– Sand resistance– Helps to reduce eye irritation– Wet skin application– SPF boosting– Comfortable wear

ColorCosmetics

– Water resistance– Sweat resistance– Rub-off resistance– Non-transfer– Comfortable wear – Even color coverage

HairCare

Styling– Strong hold– Wash resistance– Waterproofing– Style retention– No tackiness – Natural feel

Care– Heat protection– Frizz control for up to 24 hours– Anti-breakage– Effectively reduces length of split ends– Conditioning and detangling effect

SkinCare

– Protects the skin against air pollutants– Easy & gentle peel-off with no skin irritation– Facilitates longer-lasting retention of actives on the surface of the skin– Enhances efficacy of active ingredients– Rub-off resistance – Comfortable wear

6

SunCare SkinCare ColorCosmetics HairCare

The sun makes the world blossom and look great. Let’s keep it that way.

SunCare with Baycusan®.

2x20 min. immersion 4x20 min. immersion

Emulsion 1 with 7.5% Baycusan® C 1000

Ethanol spray with 5% Baycusan® C 2000

Oil spray with 5% Baycusan® C 2000

Emulsion 2 with 7% Baycusan® C 1004

As confirmed by in vivo tests conducted in accordance with guidelines established by the European Cosmetics Association (see fig.1), water resistance can be achieved in different formulation types with Baycusan® C 1000 and Baycusan® C 2000, whereas Baycusan® C 1004 imparts an even longer water resistance to emulsion-based formulations. By using the stabilization properties of water-based Baycusan® polymers (Baycusan® C 1000 and Baycusan® C 1004) in an emulsion-based product, the emulsifier or polymeric stabilizer concentration can be reduced to avoid product re-emulsification on contact with water.

Emulsion 1: Emulsion stabilized with 0.15% acrylates/C10-30 alkyl acrylates crosspolymer (Pemulen® TR-2, Lubrizol) and containing 4% OMC + 4.5% BMDBM + 4% BEMT (RR 8023)Emulsion 2: Emulsion stabilized with 1% polyglyceryl-6 stearate (and) polyglyceryl-6 behenate + 0.10% acrylates/C10-30

alkyl acrylates crosspolymer (Pemulen® TR-2, Lubrizol) containing 5% BMDBM + 5% OS + 10% OMC + 5% EHT + 10% OCR (RR 8136)

Ethanol spray: Ethanol solution containing 4.9% BMDBM + 2% BEMT + 10% OCR + 3% DHBT + 5% OS + 10% HMS Oil spray: Oil formulation containing 5% BMDBM + 3.5% BEMT + 10% OCR +5% DHBT + 5% OS + 10% HMS (RR 8096)

Water resistance

Key features– (Salt) water resistance– Sweat resistance– Sand resistance– Helps to reduce eye irritation

– Wet skin application*– SPF boosting– Comfortable wear

SunCare

suitable

Physical properties

Recommended raw materials

Trade name Baycusan® C 1000* Baycusan® C 1004* Baycusan® C 2000

Appearance White, low viscosity liquid White, low viscosity liquid Transparent, low viscosity liquid

Solid content 40.0 ± 2.0 41.0 ± 2.0 40.0 ± 5.0

Viscosity at 23°C ≤ 500 ≤ 1000 < 10000

pH 7.5 ± 1.0 7.5 ± 1.0 -

11


10

* Applicable to Baycusan® C 2000

* Also commercially available with 1.5% antimicrobial additive under the names Baycusan® C 1000/1 and Baycusan® C 1004/1.

Trade Name Baycusan® C 1000* Baycusan® C 1004* Baycusan® C 2000

INCI Name Polyurethane-34 Polyurethane-35 Polyurethane-64

Chemical descriptionWater-based

polyurethane polymer (40% polymer, 60% water)

Water-based polyurethane polymer

(41% polymer, 59% water)

Ethanol-based polyurethane polymer

(40% polymer, 60% ethanol)

Ingredient category Film forming Film forming Film forming

Application area

Emulsion- based (lotion, cream)

(Hydro-)alcoholic-based (spray, aerosol, gel)

Oil-based

45

40

35

30

25

20

15

10

5

0

In v

ivo

SPF

23.2 22.8

Static SPF SPF after water immersionFigure 1: In vivo SPF data before and after immersion

EHT: Ethylhexyl triazoneBEMT: Bis-ethylhexyloxyphenol methoxyphenyl triazineBP-3: Benzophenone-3OMC: Ethylhexyl methoxycinnamateDHBT: Diethylhexyl butamido triazone

Abbreviations:BMDBM: Butyl methoxydibenzoylmethaneDHHB: Diethylamino hydroxybenzoyl hexyl benzoateOCR: OctocryleneOS: Ethylhexyl salicylate HMS: Homosalate

23.0

41.841.3

37.2

32.331.8

Control of UV filter migration

The migration of sun care formulations on skin was found to be a source of eye irritation and less effective protection. In vivo tests demonstrated that the addition of Baycusan® C 1000 in an emulsion-based formulation inhibits the migration rate of UV filters across the skin. As shown in Figure 2, at 7.5 wt.% as supplied, Baycusan® C 1000 film former inhibits the average migration rate of an emulsion-based sun care formulation stabilized with low mole-cular emulsifiers by more than 60% over the blank formulation. An emulsifier-free formulation with the same Baycusan® concentration shows even better results: the inhibition of UV filter migration increases from 62% to 78% after about 2 hours.


RR 8020: 3% BMDBM + 10% OCR + 5% OS +10% HMSRR 8022: 5% OS + 13% HMS + 7% OCR + 4% BP-3 + 3% BMDBM RR 8163: 5% OS +6% DBT + 2% BEMT + 4% BMDBM + 2% DHHB + 3% EHT RR 8091: 4% BMDBM + 7% HMS + 7% OCR + 2% BEMT + 5% EHSRR 8094: 2% BMDBM + 15% HMS + 2% OCR + 6% BP-3 + 5% EHS

HMS: HomosalateEHT: Ethylhexyl triazoneBEMT: Bis-ethylhexyloxyphenol methoxyphenyl triazineBP-3: Benzophenone-3

The addition of Baycusan® C film formers in a sun protection formulation significantly increases the sun protection factor (SPF) under special conditions. SPF measurements have shown that Baycusan® C film formers are selective SPF boosters with the UVB filters octocrylene and ethylhexyl triazone and with broadband UV filters such as bis-ethylhexyl-oxyphenol methoxyphenyl triazine (BEMT) and benzophenone-3. As shown in Figure 3, sun care formulations containing a combination of the above mentioned UV filters with other commonly used UV filters show analogous SPF-boosting effects.

SPF-boosting effect

Abbreviations:BMDBM: Butyl methoxydibenzoylmethaneDHHB: Diethylamino hydroxybenzoyl hexyl benzoateOCR: OctocryleneOS: Ethylhexyl salicylate

120

100

80

60

40

20

0RR 8020 RR 8022 RR 8163 RR 8091 RR 8094

In v

ivo

SPF

Without film former With Baycusan® productFigure 3: In vivo SPF data for formulations with and without Baycusan® C1000

21.6

32.625.6

58.7

77.0

96.0

22.6

35.026.9

51.6

Emulsion-based products with 7.5 wt% Baycusan ® C 1000

Ethanol-based products with 4.9 wt% Baycusan® C 2000

Emulsion-based products with 5 wt% Baycusan ® C 1004

13 12

0,7

0,6

0,5

0,4

0,3

0,2

0,1

0

Mig

ratio

n ra

te a

fter

120

min

(sq.

mm

/mg/

min

)

Control 7.5 % Baycusan ® C 1000Figure 2: Migration rate of a sun care formulation after 2 hours application

Qui

cker

mig

ratio

n

Classical emulsion Emulsifier-free formulation

-62%

-78%

Ethanol spray: containing 10% HMS + 5% OS + 1.5 % EHT + 3.8% BMDBM + 2% DHBT + 7% OCR Ethanol gel: containing 10% HMS + 5% OS + 5% BMDBM + 2,5% DHBT + 6% OCR

Abbreviations:HMS: HomosalateOS: Ethylhexyl salicylate EHT: Ethylhexyl triazone BMDBM: Butyl methoxydibenzoylmethaneDHBT: Diethylhexyl butamido triazoneOCR: Octocrylene

Wet skin application

Ethanol-based sun care formulations using Baycusan® C 2000 as film former can be applied on wet skin without leaving white traces. About 70% of the static SPF value measured on dry skin can be retained after application of the formulation on wet skin, as shown in Figure 4.


35

30

25

20

15

10

5

0

In v

ivo

SPF

SPF on dry skin SPF on wet skin Figure 4: In vivo SPF data on dry and wet skin

26.4

18.8

Ethanol spray with 4 % Baycusan ® C 2000

Ethanol gel with 4 % Baycusan ® C 2000

32.8

24.3-71%

-74%


Our skin is like a delicate pearl. Let’s treasure its beauty with gentle passion. SkinCare with Baycusan®.


Physical properties

Trade name Baycusan® C 1000* Baycusan® C 1001* Baycusan® C 1004*

Appearance White, low viscosity liquid White, low viscosity liquid White, low viscosity liquid

Solid content 40.0 ± 2.0 32.0 ± 2.0 41.0 ± 2.0

Viscosity at 23°C ≤ 500 ≤ 1000 ≤ 1000

pH 7.5 ± 1.0 7.5 ± 1.0 7.5 ± 1.0

Peel-off effect

Baycusan® C 1001 and Baycusan® C 1004 enable the formulation of peel-off masks (a). After about 10 minutes, a wet peel-off formulation containing 30 wt% Baycusan® C 1001 as supplied forms a clear continuous film on the skin (b). If water is then applied to the treated skin, the product film turns white (c) and can be easily peeled off in one piece (d), as illustrated in figure 5.

SkinCare

Key features– Protects the skin against air pollutants– Easy & gentle peel-off with no skin irritation– Facilitates longer-lasting retention of actives on the surface of the skin

– Enhances efficacy of active ingredients– Rub-off resistance – Comfortable wear

Trade name Baycusan® C 1000* Baycusan® C 1001* Baycusan® C 1004*

INCI name Polyurethane-34 Polyurethane-34 Polyurethane-35

Chemical descriptionWater-based polyure thane

polymer (40% polymer, 60% water)

Water-based polyure thane polymer (32% polymer,

68% water)

Water-based polyure thane polymer (41% polymer,

59% water)


Application area

Face care products

Face masks

Body care

Hand/foot care


18 19

suitable

* Also commercially available with 1.5% antimicrobial additive under the names Baycusan® C 1000/1, Baycusan® C 1001/1, and Baycusan® C 1004/1.

Figure 5: Peel-off mask application

a b

c d

Anti-pollution effect

When incorporated into skin care formulations, Baycusan® C 1004 forms a highly flexible and breathable invisible film that mimics the movement of skin, without any tightening sensation. This film acts as a barrier to air pollutants, especially respirable particular matter smaller than 2.5 µm (so-called PM 2.5). Baycusan® C 1004 reduces the absorption of air pollutants, thus preventing damage from external aggressors and early skin aging. To demonstrate the barrier properties of Baycusan® C 1004, absorption of PM 2.5 was mea-sured by covering the inlet of a PM-meter with a cotton piece treated with a gel formulation placed in a saturated atmosphere of PM 2.5. Figure 6 shows that if the concentration of Baycu-san® C 1004 is increased, the concentration of PM 2.5 measured decreases significantly, while the barrier properties of the product film are also clearly improved.


19

Without Baycusan® C 1004

1% Baycusan® C 1004 3% Baycusan® C 1004 5% Baycusan® C 1004

80

70

60

50

40

30

20

10

0

PM 2

.5 v

alue

[ µg

/m3

]

71.4

37.7

27.8

13.8

Figure 6: Measurement of the barrier properties of Baycusan® C 1004

-47%

-61%

-81%

Enhancing the efficacy of active ingredients

Baycusan® C film formers can significantly improve the efficacy of skin care formulations. In vivo studies demonstrate that Baycusan® C 1000 supports the controlled release of actives such as salicylic acid into the stratum corneum, consequently reducing the high irritation potential of salicylic acid. The influence of Baycusan® C 1000 on the efficacy of acne treat-ment was evaluated in vivo on the backs of subjects suffering from acne by applying the test formulation for four consecutive days. The results (see fig. 7) demonstrate that Baycusan® C 1000 produces a greater improvement in the acne symptoms than treatment with the control formulation: a significant reduction in redness, inflammation.

Another in vivo study shows that Baycusan® C 1004 improves the moisturizing effect of hyaluronic acid. As illustrated in Figure 8, the hydration level of stratum corneum measured with a cornometer is significantly higher when Baycusan® C 1004 is added into the formulation.

Day 1 Day 2 Day 3 Day 4

80

70

60

50

40

30

20

10

0

% o

f infl

amm

atio

n re

duct

ion

Base formulation (blank) 2% salicylic acid 5% Baycusan® C 1000 + 2% salicylic acidFigure 7: Inflammation reduction

Base formulation (blank) 1% hyaluronic acid 1% hyaluronic acid + 5% Baycusan®C 1004

Chan

ge fr

om b

asel

ine

afte

r 5 h

ours

[%]

Figure 8: Corneometry measurements


23

250

200

150

100

50

0

101.9%

160.8%

193.6%

Color is one of life’s amazing wonders. Let’s celebrate its pure joy.

ColorCosmetics with Baycusan®.


Key features– Water resistance– Sweat resistance– Rub-off resistance– Non-transfer

– Comfortable wear– Even color coverage

Physical properties

Trade name Baycusan® C 1000* Baycusan® C 1004*

Appearance White, low viscosity liquid White, low viscosity liquid

Solid content 40.0 ± 2.0 41.0 ± 2.0

Viscosity at 23°C ≤ 500 ≤ 1000

pH 7.5 ± 1.0 7.5 ± 1.0


Trade name Baycusan® C 1000* Baycusan® C 1004*

INCI name Polyurethane-34 Polyurethane-35

Chemical descriptionWater-based polyurethane

polymer (40% polymer, 60% water)

Water-based polyurethane polymer (41% polymer,

59% water)

Ingredient category Film forming Film forming

Application area

Mascara

Eyeliner

Eyeshadow

Liquid foundation

Powder foundation

Make-up base

Lipstick and lipgloss

Nail polish

suitable


ColorCosmetics

26


The evaluation of non-transfer properties was conducted in vivo by spreading a fixed amount of foundation onto the forearm of volunteers under controlled conditions. After drying, the volunteers left an imprint of their forearm on a sheet of absorbing paper. As shown in figure 10, the imprints left from different foundation formulations containing Baycusan® C 1004 are significantly lower than standard formulations without Baycusan® C 1004.

Standard

Standard

Standard

Figure 10: Results of imprints

O/W

Baycusan® C 1004

Baycusan® C 1004

Baycusan® C 1004

W/O

W/S

Since Baycusan® C 1004 imparts superior wet rub-off resistance to color cosmetics formula-tions, it is an excellent choice for formulating waterproof and rub-off-resistant mascaras, eyeliners and liquid foundations. The excellent rub-off resistance properties of a mascara formulation (RR 8017) are demonstrated in figure 9.

No film former

Baycusan® C 1004 No film former

Warm tap water 10 seconds gentle rubbing

Baycusan® C 1004

Figure 9: Rub-off resistance

Before test:

Test:

After test:


29 28

Water resistance Non-transfer properties

Baycusan® C 1004 makes durable water-based nail polish formulations possible. The applica-tion of the nail polish is easy, color coverage good and removal facilitated by the excellent film-forming properties of Baycusan® C 1004. As shown in figure 11, the nail polish can be easily peeled off by lifting the edge at the side of the nail and pulling it off.


30

Peel-off properties in water-based nail polish formulations

Figure 11: Peel-off of the nail polish formulation containing Baycusan® C 1004

31

Hair can be the mirror of one’s soul. Let’s polish and protect it and keep it in balance.

HairCare with Baycusan®.


Key featuresStyling– Strong hold– Wash resistance– Waterproofing– Style retention– No tackiness – Natural feel

Care– Heat protection– Frizz control up to 24 hours– Anti-breakage– Effectively reduces length of split ends – Conditioning and detangling effect



Appearance White, low viscosity liquid White, low viscosity liquid White, low viscosity liquid

Solid content 40.0 ± 2.0 30.0 ± 2.0 40.0 ± 2.0

Viscosity at 23°C ≤ 500 ≤ 1000 ≤ 1000

pH 7.5 ± 1.0 7.0 ± 1.0 7.0 ± 1.0

Physical properties


INCI name Polyurethane-34 Polyurethane-48 Polyurethane-35

Chemical descriptionWater-based polyure-thane polymer (32% polymer, 68% water)

Water-based polyure-thane polymer (30% polymer, 70% water)

Water-based polyure-thane polymer (40% polymer, 60% water)


Application area

Hair styling

Aerosol and pump hair spray

Setting lotion, cream and gel cream

Aerosol and pump mousse

Hair care

Hair treatment

Leave-on conditioner


HairCare

35 34

Figure 12: SEM images of single knotted hair fiber

Baycusan® C 1001 Acrylates copolymer

Elasticity is one of the key characteristics of Baycusan film formers. Compared to traditional fixative polymers, Baycusan® polymers form exceptionally flexible films on hair. Figure 12 shows SEM images of single knotted hair fibers coated with an acrylate copolymer and Baycusan® C 1001. Under stress, the acrylate copolymer film becomes very brittle, while the Baycusan® C 1001 film remains smooth and shows no cracking.

suitable


Styling: Strong hold

Figure 13 shows a comparison of flexural strength tests (2 wt% active polymer inaqueous solution, 50% relative humidity, 21°C). Baycusan® C 1010 imparts strongholding power – as good as state-of-the-art styling copolymers, such as PVP-K90.

Baycusan®C 1001

Baycusan®C 1008

Baycusan®C 1010

PVP (K90) VP/VACopolymer

(ratio 70/30)

VP copolymer1

70

60

50

40

30

20

10

0

Max

imum

ben

ding

forc

e [c

N�

4549

63

56

28

53

Figure 13: Results of flexural strength test 1 VP/methacrylamide/vinyl imidazole copolymer


120

100

80

60

40

20

0

Hig

h hu

mid

ity c

url r

eten

tion

(%)

0 50 100 150 200 250 300 350 400Time (min)

Figure 14: Results of high humidity curl retention

Baycusan® C 1010Baycusan® C 1008Baycusan® C 1001

VP/VA copolymer (ratio 70/30)PVP (K90)VP/methacrylamide/vinyl imidazole copolymer

Styling: Humidity resistance

Baycusan® C 1001, Baycusan® C 1008 and Baycusan® C 1010 provide excellent high humidity curl retention for styling formulations – even better than market-leading styling polymers. As shown in figure 14, curl retention is measured as a function of time at 90% humidity and 25°C. Caucasian dark-brown hair tresses were treated with an aqueous solution of Baycusan® C 1001, Baycusan® C 1008 and Baycusan® C 1010 at a concentration of 2 wt% active.


Baycusan® C 1008 enhances the wash resistance properties of styling formulations. Hair styled with a Baycusan® C 1008-based formulation keeps its shape after immersion in warm water, and even after shampooing.

Figure 15 below shows the wash resistance of curly hair tresses (treated with an aqueous solution of film former at a concentration of 2 wt% active and straightened with a flat iron) before and after washing with a silicone-free commercial shampoo. After two shampoo cycles, Baycusan ® C 1008 clearly exhibits better wash resistance towards shampoo compared to an acrylate copolymer, and prevents straightened curly hair turning frizzy again when wet.

Before treatment:

Acrylates copolymer

Baycusan® C 1008

After treatment with polymer solution:

Acrylates copolymer

Baycusan® C 1008

Figure 15: Wash resistance test results

After two shampoo cycles:

38

Styling: Wash resistance

The exceptional mechanical properties of Baycusan® C 1010 result in excellent style retention. Figure 16 below illustrates the change in curl retention after running fingers through the curl (curl snap test). After they are run through ten times, Baycusan® C 1010 clearly exhibits a better curl retention than PVP (K90).

The curl snap test was repeated after placing the hair tresses in 90% relative humidity for one hour. As shown in figure 17, even at high humidity, Baycusan® C 1010 provides significantly a better style retention than PVP (K90), making it suitable for dry and humid climatic zones.

Styling: Style retention

Before test:

Before test:

PVP (K90)

PVP (K90)

Baycusan® C 1010

Baycusan® C 1010

After test:

PVP (K90)Baycusan® C 1010

After test:

PVP (K90)Baycusan® C 1010

Figure 16: Curl snap test results

Figure 17: Curl snap test results at 90% relative humidity


Cuticle split Breakage

Breakage Cuticle split

Figure 18: SEM images of hair fibers after applying heat, scale 10 µm

Protected with Baycusan® C 1008 (RR 8068)Unprotected Hair

Protected with a commercial prod-uct containing VP/VA Copolymer

Loss of lustrous shine, split hair ends and hair breakage are annoying features of hair damaged by styling tools, such as blow dryers, curlers and straightening irons, which can reach tempera-tures of up to 230°C. Baycusan® C 1008, a polymer that is stable up to 270°C, forms a protective coating on hair fiber so the hair feels revived, soft and non-sticky. Electron microscope images of hair fibers (see fig. 18) that have been regularly treated with a straightening iron over a long period of time show significant differences compared to conventional heat protection products. The thin, highly elastic Baycusan® C 1008 film protects hair against overheating. It expands with the hair under the influence of high temperatures and shrinks again during cooling, preventing fractures forming on the surface of the hair fibers.

Care: Heat protection

40 41

Care: Detangling effect

Baycusan® C1001 has a conditioning and detangling effect on hair, as the tips can then be eas-ily separated. Figure 20 indicates that, on average, 37% less force is needed to comb through hair tips treated with Baycusan® C 1001 than in untreated hair. And it is significantly harder to comb through hair treated with other technologies.

Figure 20: Relative change in combing force between untreated and treated hair (at the hair tip)

80

70

60

50

40

30

20

0 1 2 3 4 5 6 7 8

Volu

me

(%)

8066 Base control Base + VP/VA Copolymer Base + Baycusan® C1008 Figure 19: Volume of frizzy hair as a function of time: 8 h under 90% RH

Time (h)


43

Care: Frizz control up to 24 hours

Baycusan® C 1008 adds long-lasting frizz control to leave-on formulations, providing significant volume reduction up to 24 hours – even at 90% relative humidity (see fig. 19). With leave-in conditioners, silicone oil is often used to achieve this effect. However, Baycusan® polyurethane dispersions also enable silicone oil-free formulations to form a protective film on the hair fibers. The film’s non-greasy texture gives hair a flexible feel and breathtaking shine.

-50.0% -40.0% -30.0% -20.0% -10.0% 0.0% 10.0% 20.0%

-37.8%

12.3%Acrylate copolymer 1

Baycusan® C 1001

16.6%

-9.0%

Acrylate copolymer 2

Competitive polyurethane

-10.8% Dimethicone

innovative polymers for cosmetics. beauty made...

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