RMK
RMK W Treatment Oil Series Trial Set, 50ml + 2.5ml x 6
RMK W Treatment Oil Series Trial Set, 50ml + 2.5ml x 6
@cosme rating: 5.4/7.0
A special set featuring our No. 1 best-selling* oil and a moisturizing lotion!
✓ 100% authentic
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
[Set Contents] RMK W Treatment Oil (Full Size/50mL) RMK W Treatment Lotion (Pouch Sample/2.5mL x 6) A special set featuring RMK's No. 1 best-selling product of the year*, "W Treatment Oil," and pouch samples of "W Treatment Lotion" is now available. It balances the moisture and oil content on the skin's surface, leaving skin with a fresh, dewy glow, a soft texture, and a radiant sheen. Recommended for those who want to try oil-based skincare. *Based on 2024 skincare category shipment resultsRMK W Treatment Oil A pre-care treatment oil that combines an oil layer to soften the skin with a moisturizing layer to hydrate the stratum corneum. Using it at the beginning of your skincare routine prepares the skin to easily absorb subsequent moisturizing lotions and other products into the stratum corneumRMK W Treatment Lotion Provides a deeply moisturizing feeling, as if you're wrapped in a veil of water, and circulates moisture throughout the skin*. *It leads to plump, soft, and radiant skin, free from dryness and roughness in the stratum corneum.
Ingredients
How to use
RMK W Treatment Oil: After cleansing or moisturizing, shake well and take 4-5 drops, then apply to the entire faceRMK W Treatment Lotion: Take some on your hands or a cotton pad and gently pat it onto your entire face. Finally, cup your hands over your face and press gently. (If using your hands, apply in several stages.)
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.