HAIR CARE
Improving hair thickening with amaranth peptides
Dr Mihaela Gorcea, Saso Efremovski, Vivianna Chaparro - TRI-K Industries
Healthy, thick hair with beautiful movement and shine is the goal of consumers of all ages. One of the biggest concerns of consumers, regardless of age, is hair thinning. This is mainly characterised by a decrease in hair diameter. Hair thinning and a decrease in hair diameter have negative consequences for a proper manageability and a healthy appearance of hair.1,2,3 NaturePep® Amaranth (INCI: Amaranthus
Caudatus Seed Extract, hereafter referred to as Amaranth peptides) was specifically designed to overcome hair thinning concerns and increase hair fibre diameter. Due to its powerful ability to increase hair fibre diameter, Amaranth peptide technology is also proven to enhance hair bounce, movement and shine. This technology is obtained using a
vegetable superfood, Amaranth seed protein, and a proprietary manufacturing process to create low average molecular weight peptides (below 500 Da) which penetrate hair fibre and provide multi-functional hair benefits. Amaranth is one of the earliest crop
plants cultivated and used by the Aztecs as a superfood. Amaranth seeds are gluten-free and contain 30% more protein content with a complete amino acid profile when compared to wheat, rice and oats. In addition to its nutritional value, Amaranthus Caudatus is used as a biological active for its therapeutic, pharmacological and cosmetic anti-ageing benefits.4
This natural peptide technology was created
using a vegetable superfood Amaranth seed protein and a proprietary manufacturing process, which facilitates the formation of low
****p<0.0001 NaturePep Amaranth vs Initial ✦ ✦ ✦ ✦ p<0.0001 NaturePep Amaranth vs Control
16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0
13.8% ****
✦ ✦ ✦ ✦
average molecular weight peptide fractions to penetrate hair fibre and deliver multifunctional hair benefits. Amaranth’s unique peptide composition
(rich in phenylalanine and histidine amino acids) with a low average molecular weight (<500 Da) penetrates the hair cuticle via diffusion and binds to the internal structure of the hair via hydrogen bonding to help reinforce its structural integrity and tensile strength, which leads to an increase in hair diameter. Our study results are in line with previously reported findings, which demonstrate that hair diameter increase provides increase in hair thickness and body.5
Hair diameter A proof of principle study was developed to evaluate the ability of Amaranth peptide technology to increase hair diameter on individual fibres and to increase hair thickening. Amaranth peptide technology was used at 1% solution and compared with a water solution as a control. Water is known to cause hair swelling and can increase hair diameter.5,6 In this study, we used bleached Caucasian
hair swatches. Hair diameter measurements were performed with a Leica DM 2700 microscope coupled with LasX V3.04 software. Hair swatches were soaked in treatment solutions for 15 minutes at 40°C and allowed to air-dry for 24 hours. This procedure was repeated for three applications, then swatches were coloured with Rhodamine B dye, and prepared for microscopic evaluations. Hair fibres were mounted on slides and
equilibrated for one hour at 20°C and 50% relative humidity before taking diameter
CONTROL ABSTRACT
It is well reported that hair ageing and repeated external insults, such as chemical damage or mechanical abrasion, cause significant decrease in hair fibre diameter which leads to thin, fragile, lifeless looking hair. NaturePep® Amaranth, part of TRI-K Industries’ natural peptide technology platform, is specifically designed to address thin, fragile hair and increase hair diameter and thickness. Amaranth’s specific peptide composition ensures a broader range of biological activity and provides multifunctional benefits on the hair fibre. It provides clinically proven benefits such as increase in hair diameter, thickness, bounce, shine and improves overall hair appearance.
measurements. Microscopic analysis was used to determine the initial diameter of the fibre and after three applications with tested materials. Measurements were conducted on 30 hair fibres (three measurements for each fiber) consistently on the middle portion of the fibre. As Figure 1 shows, after three applications
of Amaranth peptides, hair diameter increased significantly by 13.8% compared to initial (p<0.0001) and by 11.5% compared to water solution (p<0.0001). Water solution did not induce a statistically significant increase in the hair fibre diameter compared to the initial diameter. Microscopic images of the hair fibre treated
with the water solution and the hair treated with Amaranth peptides are shown in Figure 2.
NATUREPEP AMARANTH
55
2.3% Control NaturePep Amaranth
Figure 1: Change in hair diameter after Amaranth peptides & control treatments compared to initial
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Figure 2: Microscopic images of hair treated with water control & Amaranth peptide treatment March 2022 PERSONAL CARE
Percentage (%) Change in hair diameter compared to initial
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