OSAJI
Osaji Tuning Moisture Sheet Mask Set, 20ml x 5
Osaji Tuning Moisture Sheet Mask Set, 20ml x 5
Rated 5.3 out of 7.0 on @cosme, Japan's largest beauty review site
A set of five sheet masks that support the skin barrier and moisture.
✓ 100% authentic, bought in Japan
✓ Ships from Tokyo in 3 business days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
Tuning Moisture Sheet Mask Set is a five-piece sheet mask set, 20ml each, for weekly special care. Each mask wraps skin in moisture to address dryness and uneven texture, with a lactate complex that supports the skin's barrier, two hyaluronic acids, and plant-derived proteoglycan for firmness. It leaves skin clearer, softer, and more supple.
Why it's different
A lactate complex supports the skin's surface barrier as it hydrates.
Two hyaluronic acids and plant proteoglycan add moisture and firmness.
Weekly special care that leaves skin clearer, softer, and more supple.
Key ingredients
Lactate complex: supports the skin's surface barrier
Hyaluronic acid: adds and holds moisture
Proteoglycan: supports firmness
How to use
1. Unfold the mask and fold the eye flaps back.
2. Fit it to the face, aligning the eyes and mouth, and press out air gaps.
3. Leave on for about 5 to 10 minutes, then massage the remaining serum in.
Osaji Tuning Moisture Sheet Mask Set, 20ml x 5
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 does it help with?
It wraps skin in moisture to address dryness and uneven texture, with a lactate complex that supports the barrier for clearer, supple skin.
How long do I leave it on?
About 5 to 10 minutes. Then remove it and massage the remaining serum into the skin.
How often should I use it?
Use it as weekly special care, or whenever your skin needs an extra moisture boost.
How many masks are in the set?
The set contains five sheet masks, each with 20ml of serum.
We ship internationally from Japan!
International Delivery Rates
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 international shipping take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan. As of 22 July 2026:
- 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
These are estimates only. 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. We offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I have to 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.