Damage Prevention Effect of Green Tea Seed Oil on Colored and Decolored Hair

Abstract

Stained and discolored hair will be damaged by the shampooing, daily UV disposal, and the use of hair dryer. Thus many studies about the effect of various natural substances on the re-secure the skin and scalp are recently reported. This study was carried out to investigate the effect of green tea (Camelloia sinensis) seed oil on colored (dyed) and decolored (bleached) hair. The beneficial effects of green tea seed oil are already well known, but little research has been done about the hair treatment and fade-resistant effect. Dyed and bleached hair was pretreated with green tea seed oil to determine the tensile strength and elongation of the hair, to analyze the hair surface using SEM, and to compare the color fade using spectrocolormeter. The results showed that the tensile strength increased with green tea seed oil pretreatment samples for virgin, dyed, and bleached hairs. Elongation showed the reverse results showing the presence of hair treatment effect. The results of the surface pre-treatment in all groups analyzed by SEM, the hair cuticle became sharper, so coating effect were identified with all samples. The value of the L*, a*, b* decreased with washed hairs damaged by UV irradiation and the values were decreased also in dyed and bleached hair. In summary, green tea seed oil prevent reinjury to the heat and UV rays for colored and decolored hairs. Cosmetic practice effects of the oil were identified in the field to be appropriate to the customer's skin and scalp that natural cosmetic oils would like to offer.

The Effect of Improving Demaged Hair by Bleaching Treatment with Adansonia digitata Seed Oil

“…시중에 판매되는 과거 제품들은 유막형성으 로 인한 컨디셔닝 기능이 있다면, 현재의 연구 개발품들은 들 뜬 표피층을 매끈하게 하고 소실된 모표피를 보수해주는 제품 들이 주를 이룬다 (Kang & Hyun, 2005). 선행 연구에서 동백씨 오일 추출물과 올리브오일이 모발손상도 회복측정 실험 (Choi, 2012)에서 큐티클 개선 효과를 확인하였고, 녹차씨 오일 (Min et al, 2013)과 피마자유의 처리 (Kim, 2021) (Gebauer et al, 2002). 또한, 각종 지방산이 다량 함유되어 있고 칼슘, 포타슘, 플라보노이드, 식이섬유, Vit.A, C, D3, E, F 등이 풍부하여 피부 유연화, 보습, 진정, 항산화, 항바이러스, 피부재 생, 소염, 상처치유 효능•효과가 높은 원료이다 (Chadare et al, 2008).…”