1. Protective effects of fermented honeybush (Cyclopia intermedia) extract (HU-018) against skin aging: a randomized, double-blinded, placebo-controlled study
- Author
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Eun Jung Ko, Ji Yeon Hong, Beom Joon Kim, Mi Hyoung Lim, Sung Hum Yeon, Rak Ho Son, Sun Young Choi, and Sung-Woon Hong
- Subjects
Adult ,Double blinded ,Placebo-controlled study ,Dermatology ,Pharmacology ,medicine.disease_cause ,Eye ,Antioxidants ,Skin Aging ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Double-Blind Method ,Skin Physiological Phenomena ,Medicine ,Humans ,Rejuvenation ,Ultraviolet radiation ,biology ,Cyclopia Plant ,business.industry ,Plant Extracts ,food and beverages ,Middle Aged ,biology.organism_classification ,Water Loss, Insensible ,Elasticity ,030220 oncology & carcinogenesis ,Fermentation ,Surgery ,Female ,business ,Cyclopia intermedia ,Oxidative stress ,Phytotherapy - Abstract
Oxidative stress and photodamage resulting from ultraviolet radiation exposure play key roles in skin aging. Fermented Cyclopia intermedia, which is used to brew honeybush tea, exerts antioxidant and anti-wrinkle effects by inhibiting reactive oxygen species production and downregulating matrix metalloproteinase activity.This randomized, double-blinded, placebo-controlled study aimed to evaluate the efficacy and safety of fermented honeybush (Cyclopia intermedia) extract (HU-018) for skin rejuvenation.120 Korean subjects with crow's feet wrinkles were randomized to receive either low-dose extract (400 mg/day), high-dose extract (800 mg/day), or placebo (negative control, only dextran) for 12 weeks. Wrinkles were evaluated using JANUSGlobal skin wrinkle grade was significantly improved in both low-dose and high-dose groups compared to placebo group, as well as for skin hydration and elasticity. Both the low- and high-dose groups showed significantly decreased TEWL compared to the placebo group. There were no adverse effects during the entire study period.Our data indicate that HU-018 is effective for improving skin wrinkles, elasticity, and hydration. Therefore, daily supplementation with fermented honeybush could be helpful for protecting against skin aging.
- Published
- 2018