SILICONES
large beaker of tap water and excess water was removed. The hair tress was placed in MTT175 tensile tester (Dia-Stron). The hair tress was always applied in the same comb area and comb through. A ‘wet control’ measurement of wet combing
force was taken. The hair tress was dried with a hair dryer and hand combed from top to bottom. It was then placed back in the tensile tester and a ‘dry control’ measurement of dry combing force was taken.
Then, one millilitre of shampoo (Formula 1)
was applied to a hair tress and massaged for one minute. The hair tress was rinsed for 30 seconds under flowing tap water with a controlled flow rate. One millilitre of a rinse-off conditioner (Formula 2) was applied to the same hair tress, massaged for one minute and rinsed for 30 seconds.
The hair tress was dipped three times into a
large beaker of tap water and excess water was removed. The hair tress was placed in MTT175 tensile tester (Dia-Stron). The hair tress was always applied in the same comb area and comb through. A measurement of combing force of a wet
treated hair tress was taken. The hair tress was dried with a hair dryer and hand combed from top to bottom. It was then placed back in the tensile tester and a measurement of dry treated combing force was taken. All steps were repeated with the other nine hair tresses. These studies show a significant
conditioning performance benefits of Bis- Hydroxy/Methoxy Amodimethicone based on ease of combing in wet (combing force reduction of 84.6%) and dry conditions (combing force reduction of 77.4%). Efficient conditioning effect from Bis-Hydroxy/Methoxy Amodimethicone reduces combing forces and help to reduce hair breakage over time.
Improved hair smoothness Bis-Hydroxy/Methoxy Amodimethicone has played a major role in a product development partly due to its excellent conditioning properties but also because it provides hair smoothness and softness. The results in Figure 4 indicate that hair
tress treated with shampoo (Formula 1) and conditioner (Formula 2) formulated with
86.00 84.00 82.00 80.00 78.00 76.00 74.00 72.00
Wet Combing Dry Combing
Figure 3: Dia-stron combing data (2.5% of BRB SF 242 in shampoo and conditioner vs shampoo without silicone)
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A Colour reference (no washing) B Control (no silicone) C BRB SF 242 (2.5% Si active)
FORMULATION 1: SHAMPOO No
1
2 3 4 5 6 7
8 9 10
Ingredients Aqua
Tetrasodium EDTA Acrylates Copolymer
Sodium Laureth Sulfate 70% Triethanolamine
Cocamidopropyl Betaine Cocamide DEA
BRB SF 242 (Bis-Hydroxy/Methoxy Amod- imethicone)
Sodium Laureth Sulfate (and) Glycol Distea- rate (and) Cocamide MEA
Preservative
FORMULATION 2: CONDITIONER No
1
2 3
4 5
Ingredients Aqua
Glycerin Cetearyl Alcohol (and) Ceteareth-20
BRB SF 242 (Bis-Hydroxy/Methoxy Amodimethicone)
Preservative
69
Dosage (%) q.s. to 100 0.10 3.00 15.00 q.s.
10.00 2.00
2.50
1.50 q.s.
Dosage (%) q.s. to 100 2.00 7.00
2.50 q.s.
Figure 2: Colour protection with Bis-Hydroxy/ Methoxy Amodimethicone
Bis-Hydroxy/Methoxy Amodimethicone have improved smoothness compared to control during the wet combing test.
Improved hair manageability Today, consumers have expectations on hair care products that stretch beyond merely hair cleaning. There is a notable manageability concern regarding fizziness, especially for curly hair when exposed to high temperature and high humidity environments.2 In these studies, ring method technique
was used to measure the force required to pull tresses of hair through varying sizes of ring fittings on Dia-Stron tensile tester. This test required to create volume of hair tress by placing it in Burrell wrist action flask shaker at the maximum setting. A Dia-Stron was then used to measure force required for hair tresses to pass through various sizes of ring fittings. The results in Figure 5 show that less force
was required on treated hair tresses with Formula 1 and Formula 2 compared to control.
Before control
Improved hair shininess Dull hair tends to lack in moisture, shine and body. It can be due to many factors, like overusing harsh chemicals or techniques, hormonal imbalance, overexposure to sun and aging. The demand for products that enhance hair shine and lustre has grown dramatically in recent years. In these studies, double bleached virgin
hair tresses were used. Hair tresses were washed with 10% SLES solution under the controlled temperature, time, and flow rate of water. The hair tresses were dried followed by an application of ten drops of Bis-Hydroxy/ Methoxy Amodimethicone solution with a pipette.
The solution was massaged into hair for
ten seconds and left for one minute. The hair tresses were examined with Lenovo microscope under magnification of 40X. The results in Figure 6 clearly indicate that
hair tresses treated with Bis-Hydroxy/Methoxy Amodimethicone provide notably higher gloss levels. The shine of the hair is much improved demonstrating healthy-looking hair, a common claim of many hair care products.
After control After treatment
Before control: wet hair tress with running water
Figure 4: Hair smoothness November 2022 PERSONAL CARE
After control: wash hair tress with 10% SLES and then rinse
After treatment: hair tress
washed with shampoo (Formula 1), rinsed and applied rinse-off conditioner (Formula 2)
Combing Force Reduction (%)
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