Medulla
MEDULLA HYPERLINK SERUM, 55ml
MEDULLA HYPERLINK SERUM, 55ml
Rated 5.2 out of 7.0 by Japan’s largest beauty community
The best damage care ever, leave-in hair serum
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
Transform your hair overnight. MEDULLA presents HYPERLINK SERUM, the most advanced damage care leave-in hair serum in MEDULLA's history. 1. A unique formula containing a low-molecular-weight peptide, a first in Japan. The key ingredient in this product, peptide, was developed in collaboration with domestic and international experts in the development of functional ingredients. These ingredients were then commercialized through joint development by Storia Co., Ltd. and Sparty Co., Ltd. A fusion of hair science and botanical research has resulted in the formulation of a biomimetic ingredient with a structure similar to hair keratin. It repairs hair three-dimensionally at a deep level. 2. Low-molecular-weight peptides that allow penetration deep into the hair. Penetrates deep into the hair to repair damage. Its light texture penetrates the hair. It protects the cuticle while also protecting against damage caused by external friction, preventing split ends and other issues. HYPERLINK SERUM focuses on hair's elasticity, luster, and manageability, aiming for dazzling, radiant hair. This single product addresses signs of hair aging (*1), regardless of hair type or texture. This is the ultimate all-in-one product. It took approximately 18 months to develop, and its meticulous texture will bring your hair to its ideal state. Busy women in their 30s, who are starting to notice signs of hair aging (*1) and struggle to find time for themselves due to their busy schedules at work and raising children, wish they could "reset" the daily damage to their hair. This is MEDULLA's most advanced damage care product, developed with that concept in mind. *1 Rejuvenate dry, lacking shine overnight with a revitalized look. MEDULLA's most advanced damage care, a leave-in hair serum, will be available from March 20, 2024. Product volume: 55mL. Texture: A rich, non-greasy texture like a serum. Scent: A fresh, delicate rose scent with a touch of bright lychee.
Ingredients
How to use
After shampooing and conditioning, lightly pat your hair dry, then apply approximately two pumps of the product to your palms and spread it evenly across your palms, working your way through your hair from the inside out. Depending on your hair length and volume, we recommend using three pumps. Allow the product to penetrate for approximately four minutes, then finish by carefully drying your hair with a hair dryer.
We ship internationally from Japan!
Frequently Asked Questions
Is this authentic?
Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.
We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.
What are your shipping rates?
On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.
Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.
How long does delivery take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.
- United States: 12 to 15 business days
- Canada, United Kingdom, France, Germany: 9 to 12 business days
- Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
- China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
- Rest of the world: 11 to 18 business days
Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.
Do you offer express shipping?
Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I pay customs or import fees?
US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.
Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.
We're working on rolling out prepaid duties for more countries soon.