RMK
RMK W Treatment Oil Series Starter Set, 50ml
RMK W Treatment Oil Series Starter Set, 50ml
Rated 5.4 out of 7.0 by Japan’s largest beauty community
A special set is now available, perfect for those who want to try oil-based skincare.
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
[Set Contents] ・RMK W Treatment Oil (50mL/full size) ・RMK W Treatment Lotion (160mL/full size) ・RMK W Treatment Oil-in Cream (pouch sample 0.5g x 2 uses) ・RMK Serum Cleansing Oil (40mL/mini size) This set includes the No. 1 best-selling* oil and the lotion from the same series. *2025 RMK skincare category shipment results This set is also recommended for those who want to try oil-based beauty products. It comes with a cream (pouch sample) from the same series and a new cleansing oil (mini size) released in March. RMK W Treatment Oil A pre-care treatment oil that combines an oil layer that softens the skin and a moisturizing layer that replenishes the stratum corneum. By using it at the beginning of your skincare routine, it prepares the skin so that subsequent moisturizing lotions and other products can easily penetrate the stratum corneum. RMK W Treatment Lotion: Provides a deeply moisturizing feel, as if you're wrapped in a veil of water, and a captivating* hydrating sensation that circulates moisture throughout your skin. *Reaches the stratum corneum, leading to plump, soft, and radiant skin free from dryness and roughness. RMK W Treatment Oil-in Cream: Formulated with a balanced blend of "moisturizing ingredients" and "emollient ingredients." Its high moisturizing power protects the skin, leading to moisturized, firm, radiant, and soft skin. RMK Serum Cleansing Oil: A cleansing oil that uses RMK's unique formula to combine powerful cleansing that removes makeup in an instant with just a gentle application, and a moisturizing feeling like you've just finished skincare. No emulsification process with a small amount of water is required, and it removes makeup quickly while reducing the burden on the skin.
Ingredients
How to use
RMK W Treatment Oil: After washing your face or preparing your skin with a moisturizer, shake well up and down, take 4-5 drops, and apply to your entire face. RMK W Treatment Lotion: Take an amount on your hand or a cotton pad and gently pat it onto your entire face. Finally, cup your hands over your face and press down. (If using your hands, apply in several stages.) RMK W Treatment Oil-in Cream: After preparing your skin with a moisturizer (lotion), take a pearl-sized amount and spread it over your entire face from the center outwards, then cup your hands over your face and press down to ensure it is fully absorbed. RMK Serum Cleansing Oil: This is a 2-layer type, so shake well until the contents become cloudy so that the upper and lower layers are thoroughly mixed. 2. Take an amount the size of a 500 yen coin onto your dry palm and apply to your entire face, ensuring the oil is evenly distributed. 3. For long-lasting eye makeup, gently massage the oil into the eyelids and lashes with your eyes closed, ensuring it reaches even the finer details. 4. Rinse thoroughly with water or lukewarm water.
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.