IROIKU
IROIKU Night Treatment, 18ml
IROIKU Night Treatment, 18ml
Rated 5.2 out of 7.0 by Japan’s largest beauty community
An ultra-concentrated*1 serum that prepares the skin's foundation while you sleep, leading to healthy skin
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
Couldn't load pickup availability
What it is
This ultra-concentrated*1 serum prepares the skin's foundation while you sleep, leaving it plump and firm the next morning. The water in the base is replaced entirely with fermented rice milk filtrate*2. Packed with the same amino acids as the skin's natural moisturizing components, it blends seamlessly into the skin, leaving it deeply hydrated. It also contains a generous blend of eight beauty ingredients*5 that help regulate skin conditions, including thyme extract*3, which restores skin to a state similar to that of a deep sleep, sea swallow extract*4, which protects the skin's barrier function, and dipotassium glycyrrhizinate. It locks in moisture, leaving skin plump and radiant. Synthetic dye-free, synthetic fragrance-free, paraben-free, UV absorber-free, old designated ingredients-free, non-comedogenic tested*6, animal testing-free*1 In our products *2 Lactobacillus/rice extract fermented liquid (moisturizing) *3 Thyme flower/leaf/stem extract (moisturizing) *4 Hydrolyzed starfish extract (moisturizing) *5 All moisturizing ingredients *6 This does not mean that comedones will not occur in all people.
Ingredients
How to use
<Recommended amount per use> After toning your skin with lotion and Skin Tune Up Serum, take a coin-sized amount in the palm of your hand and smooth it over your entire face. Finally, wrap your face in your palms and press in with your hands.
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.