{"id":5571,"date":"2026-09-14T21:02:49","date_gmt":"2026-09-14T12:02:49","guid":{"rendered":"https:\/\/blog.yeoshin.co.kr\/en\/rejuran-i-under-eye-treatment-guide\/"},"modified":"2026-09-14T21:03:10","modified_gmt":"2026-09-14T12:03:10","slug":"rejuran-i-under-eye-treatment-guide","status":"publish","type":"post","link":"https:\/\/blog.yeoshin.co.kr\/en\/rejuran-i-under-eye-treatment-guide\/","title":{"rendered":"Rejuran I: The Ultimate Guide to Under-Eye Rejuvenation"},"content":{"rendered":"

\"Rejuran<\/p>\n

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[Rejuran I]<\/strong> Tired of hearing ‘You look so tired today?’ Rejuran I might just be the under-eye rescue you’ve been looking for.<\/div>\n

Have you ever looked in the mirror after a full night’s sleep, only to see dark circles and fine lines making you look utterly exhausted? I know I have. To be honest, the skin under our eyes is incredibly thin and fragile, making it the first area to show signs of aging and fatigue. No matter how much expensive eye cream I slathered on, the results were often underwhelming. That’s when I discovered Rejuran I, a treatment specifically designed for this delicate area. Let’s dive into what makes this treatment so special! \ud83d\ude0a<\/p>\n

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What Exactly is Rejuran I? \ud83e\udd14<\/strong><\/h2>\n

Rejuran I (pronounced ‘eye’) is a targeted injectable treatment belonging to the famous Rejuran family. While you might have heard of the classic Rejuran Healer for overall facial rejuvenation, Rejuran I is specially formulated for the delicate under-eye area. The ‘I’ literally stands for ‘Eye!’<\/p>\n

The core ingredient is Polynucleotide (PN)<\/span>, which is derived from salmon DNA. Why salmon? Because its DNA is highly compatible with human DNA, making it extremely safe. When injected, these PNs work like little construction workers, repairing damaged cells, stimulating collagen production, and thickening the dermis.<\/p>\n

\ud83d\udca1 Tip: Rejuran Healer vs. Rejuran I<\/strong>
The main difference lies in the viscosity (thickness). The skin under our eyes is about 40% thinner than the rest of our face. Rejuran I has a lower viscosity, meaning it’s more liquid-like. This prevents the formation of long-lasting lumps and ensures the product spreads smoothly across the delicate under-eye tissue.<\/div>\n<\/div>\n

\"The<\/p>\n

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Key Benefits of Rejuran I \ud83c\udf1f<\/strong><\/h2>\n

So, what can you actually expect after getting this treatment? I think it’s crucial to have realistic expectations, but the clinical results are genuinely impressive.<\/p>\n\n\n\n\n\n\n\n\n
Benefit<\/th>\nHow it Works<\/th>\n<\/tr>\n<\/thead>\n
Reduces Dark Circles<\/td>\nThickens the skin, hiding underlying blood vessels that cause darkness.<\/td>\n<\/tr>\n
Smoothes Fine Lines<\/td>\nBoosts collagen and elastin, softening crow’s feet.<\/td>\n<\/tr>\n
Improves Elasticity<\/td>\nRestores the structural integrity of the extracellular matrix.<\/td>\n<\/tr>\n
Deep Hydration<\/td>\nPN binds with water molecules, providing long-lasting moisture.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u26a0\ufe0f Warning: The ‘Embossing’ Effect<\/strong>
Right after the procedure, you will experience small, mosquito-bite-like bumps under your eyes. This is completely normal and means the product was delivered correctly into the dermis. Since Rejuran I is thinner, these bumps typically subside within 24 to 48 hours.<\/div>\n

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What to Expect During the Procedure \ud83d\udc69\u200d\u2695\ufe0f<\/strong><\/h2>\n

I know needles near the eyes sound terrifying. But trust me, the clinics take pain management very seriously.<\/p>\n

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  1. Numbing:<\/strong> A strong topical numbing cream is applied for about 20-30 minutes.<\/li>\n
  2. Injection:<\/strong> The doctor uses ultra-fine nano needles. The process takes less than 10 minutes.<\/li>\n
  3. Aftercare:<\/strong> Soothing masks or LED light therapy are often applied to calm the skin.<\/li>\n<\/ol>\n
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    \ud83d\udd22 Downtime Estimator<\/h3>\n

    Curious about how long your recovery might take? Try this simple estimator based on general clinical observations.<\/p>\n

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    Your Skin Type:<\/div>\n