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Citrus Unshiu Peel Extract

Also-called-like-this: Satsuma Mandarin, Satsuma Orange
What-it-does: skin brightening, antioxidant

Details

Out of the more than 900 Citrus species known today, Citrus Unshiu is a seedless, easy to peel tangerine coming from the Japanese town Satsuma. The peel extract used in cosmetics is mainly created from the "press-cake", the by-product of the juice industry and as it turns out, what's waste to one industry is a useful ingredient to another. 

In cosmetics, the main thing of the Citrus Unshiu Peel Extract is being a skin-brightening or whitening agent. In-vitro (made in test tubes) and animal studies both show promising results for inhibiting tyrosinase, the famous enzyme regulating melanin production. It also contains antioxidant components such as carotenoids, coumarins,  limonoids, and flavonoids that might be useful for the skin to protect itself from UV caused damages. 

The downside of citrus peel extracts (that prevents our goodie rating) is that they usually contain some amount of essential oil components, though the amount is probably way too low to worry about unless you're super-duper sensitive. 

Show me some proof

  • Kim, Sang-Suk, et al. "Citrus peel wastes as functional materials for cosmeceuticals." Journal of Applied Biological Chemistry 51.1 (2008): 7-12.
  • Kim, Sang Suk, et al. "Down-regulation of tyrosinase, TRP-1, TRP-2 and MITF expressions by citrus press-cakes in murine B16 F10 melanoma." Asian Pacific journal of tropical biomedicine 3.8 (2013): 617-622.
  • ORYZA OIL & FAT CHEMICAL CO., LTD. , CITRUS UNSHIU EXTRACT: Health Ingredient for whitening and aesthetic, Ingredient for cosmetics

Products with Citrus Unshiu Peel Extract

Frudia Citrus Brightening Serum Frudia Citrus Brightening Toner Image Iluma Intense Lightening Serum Secret Nature Mandarine Honey Moisturizing Toner Tula Illuminating Face Serum Miskin Gold Diamond Hydro Gel Eye Patch Honey Green Tea innisfree Aloe Revital Skin Mist Secret Key Gold Racoony Hydrogel Eye & Spot Patch Fresh Black Tea Kombucha Facial Treatment Essence Huxley Keep Calm Healing Mask Sulwhasoo Gentle Cleansing Foam Ex innisfree Aloe Revital Sleeping Mask Elizavecca Hell Pore Clean Up Aha Fruit Toner innisfree Green Barley Gommage Peeling Mask innisfree Intensive Hydrating Serum With Green Tea Seed Dong Wha Pharmaceutical Company Whal Myung Skin Elixir innisfree Jeju Volcanic Color Clay Mask Blue (Hydrating) innisfree Jeju Volcanic Color Clay Mask Yellow (Brightening) Clinique Super City Block Oil-Free Daily Face Protector Broad Spectrum 40 Spf Neogen Bio-Peel Gauze Peeling Lemon Soo'Ae Juicy Mango Glow Mask Sulwhasoo Gentle Cleansing Oil Ex innisfree Truecare Cica Intensive Balm innisfree Bija Trouble Lotion innisfree It’S Real Squeeze Mask Green Tea innisfree The Green Tea Seed Cream Secret Key Marine Racoony Hydrogel Eye & Multi Patch Secret Key Marine Racoony Hydrogel Eye & Multipatch innisfree Jeju Volcanic Color Clay Mask Black (Purifying) innisfree Jeju Volcanic Color Clay Mask Pink (Vitalizing) innisfree Jeju Volcanic Color Clay Mask White (Refining) innisfree Skin Clinic Mask Madecassoside Dr Dennis Gross Clinical Grade Ipl Dark Spot Correcting Serum innisfree Skin Clinic Mask Vitamin C Atoclassic Real Tonic Calming Intensive Cream Sulwhasoo Essential Balancing Water Ex Sulwhasoo First Care Activating Serum Ex innisfree Derma Formula Skin Barrier Cream innisfree Jeju Volcanic Pore Clay Mask Jason Lightening Vitamin K Créme Plus innisfree Bija Cica Balm innisfree Jeju Volcanic Color Clay Mask Purple (Calming) innisfree Skin Clinic Mask - Collagen innisfree Skin Clinic Mask - Hyaluronic Acid innisfree Super Volcanic Pore Clay Mask innisfree Jeju Volcanic Color Clay Mask Green (Cica) innisfree Super Volcanic Clay Mousse Mask innisfree Water Fit Cushion Refill innisfree Bija Trouble Mask innisfree Eco Safety Perfect Spf 50 (Discontinued)