TUNEMAKERS
TUNEMAKERS Undiluted Eye Serum, 15ml
TUNEMAKERS Undiluted Eye Serum, 15ml
Rated 5.0 out of 7.0 by Japan’s largest beauty community
Undiluted beauty serum for the eye area, made by mixing undiluted liquids
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
This eye serum is made from a blend of undiluted liquids. It penetrates deep into the stratum corneum, leaving skin feeling plump and firm. Our developers, who are most familiar with the properties of undiluted liquids, carefully selected five undiluted liquids to address eye concerns (lack of firmness, dullness, dryness), and formulated them in a unique "eye care ratio." Retinol [5]: Vitamin C derivative [3]: Vitamin E derivative [3]: Ceramide [2]: Hyaluronic acid [1]. It contains a "penetrating, stable retinol" that's encapsulated to facilitate penetration of unstable retinol.
Ingredients
How to use
<Recommended Usage> 1. After moisturizing your entire face with lotion, take an appropriate amount onto your fingertips and gently blend with your ring and middle fingers. Gently massage the product into your lower eyelid, from the outer corner to the inner corner, and into your upper eyelid, circling the area around your eye, from the inner corner to the outer corner. 2. At the outer corner of your eye, lift up any areas of concern and apply the product thoroughly while smoothing. Apply additional layers to areas where you are particularly concerned about dryness or signs of aging. 3. Then, seal in the product with Tune Makers Undiluted Moisturizing Cream. If you are particularly concerned about dryness, apply additional layers. You can also customize your eye cream by mixing a few drops into your undiluted moisturizing cream.
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.