Protective effects of fermented honeybush (Cyclopia intermedia) extract (HU-018) against skin aging: a randomized,double-blinded,placebo-controlled study |
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Authors: | Sun Young Choi Ji Yeon Hong Eun Jung Ko Sung-Woon Hong Mi Hyoung Lim |
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Institution: | 1. Department of Dermatology, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea;2. Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea;3. Department of Dermatology, Myongji Hospital, Seonam University College of Medicine, Goyang, Korea;4. Department of Clinical Research &5. Medical information, Huons Co., Ltd., Gyeonggi-do, Korea |
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Abstract: | Background: 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. Objectives: 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. Methods: 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 JANUS® and PRIMO pico®. Skin elasticity, hydration and transepidermal water loss were measured. Results: Global 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. Conclusion: 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. |
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Keywords: | Fermented Cyclopia intermedia honeybush skin aging |
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