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KMID : 0604520200460010057
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Journal of the Society of Cosmetic Scientists of Korea
2020 Volume.46 No. 1 p.57 ~ p.65
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Prevention of Protein Loss Using A Shield Coating According to Moisture Behavior in Human Hair
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Song Sang-Hoon
Im Byung-Taek
Son Seong-Kil
Kang Nae-Gyu
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Abstract
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To prevent loss of hair protein during hair washing process by water through, a shield coating the pathway of water molecules was studied. Hydrophobic virgin hair, hydrophilic hair, which was damaged only methyleicosanoic acid (18-MEA) on the surface, and a repaired hair re-bound 18-MEA, were prepared and water mass changes by as heat were measured. Results showed that hydrophobic hairs followed bi-exponential function of 39 s and 151 s and other two hairs exhibited fast- and mono-exponential decay with 83 s, reflecting the extraction of water molecules without any resistance at the hydrophobic surface. On the assumption that hydrophobic surface resists an extraction of protein in water during the wash, the protein concentrations were compared from the hair of hydrophobic and hydrophilic surface.
The extracted hair proteins were 179 and 148 μg/mL from the hair coated with hydrophilic polyethylene glycol (PEG) and hydrophobic polydimethylsiloxane (PDMS), respectively. This study suggested that hydrophobic coating on the hair surface could be used to prevent protein loss in wash, represented by LFM. In conclusion, this research provides some useful information to contribute to the development of hair washing products that can prevent protein loss in the cleaning process by granting hydrophobic coatings.
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KEYWORD
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oil delivery, hair, shampoo, protein protection, moisture
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