Spa treatment
Spa Treatment Real C-Serum Set, 18ml
Spa Treatment Real C-Serum Set, 18ml
@cosme rating: 4.6/7.0
A beauty serum that addresses a variety of skin concerns
✓ 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: Spa Treatment eX Real C-Serum 18ml (full size), Spa Treatment HAS Stretch iSheet exo (2 sheets per pack, 4ml serum volume) x 2 packs, Spa Treatment UMB Stretch iSheet (2 sheets per pack, 4ml serum volume) x 2 packs, Spa Treatment NMN Stretch iSheet (2 sheets per pack, 4ml serum volume) x 2 packs, Spa Treatment ex Real C-Serum (pouch type) x 2 packs, Spa Treatment exo Moist Essence (pouch type) x 2 packs. This limited-edition set includes a full-size Spa Treatment eX Real C-Serum 18ml, a convenient pouch sample, three spot sheet mask samples, and a sample of the "exosomes" serum that targets signs of sagging skin. This pure vitamin C*3 serum utilizes the special "DPD capsule" technology to encapsulate pure vitamin C*3 in a multi-layered capsule. It delivers deeply into the skin*4, addressing a variety of issues, including roughness, uneven texture, lack of firmness and radiance, and dry pore problems. The rich texture is like oil, yet blends easily into the skin, leaving a slight warmth. *1: Lack of firmness and uneven texture *2: Human adipose stromal cell exosomes (moisturizing and skin conditioning ingredient) *3: Ascorbic acid (skin conditioning ingredient) *4: Deep into the stratum corneum
Ingredients
How to use
<Spa Treatment eX Real C-Serum> 1. After cleansing and washing your face, tone your skin with toner. 2. Dispense 2-3 drops (about the size of a 1 yen coin) from the dropper into your palm and smooth over your entire face. Apply an additional 1-2 drops to areas with enlarged pores*1 or lack of firmness. 3. Rub into your skin with a palm-sized motion, then finish with a moisturizing serum or cream. *If using in the morning, be sure to apply UV protection. Take another pump and thoroughly care for your neck and décolleté, areas prone to signs of aging*2. *1Due to dryness *2Dryness, lack of firmness, and lack of radiance <3-type (UMB/HAS/NMN) Stretch i-Sheet Pouch Type> 1. After washing your face, tone your skin with toner or serum. 2. Take one sheet at a time and place it under your eyes. Gently pull with one hand to apply the sheet. 3. Leave on for about 10 minutes, then remove the sheet. Rub the remaining serum into your skin with your fingertips and lock in moisture with lotion or cream. <Spa Treatment ex Real C-Serum Pouch Type> After washing your face and applying lotion, take out the entire amount and apply to your face, décolleté, etc. <Spa Treatment exo Moist Essence Pouch Type> After washing your face and applying lotion, take out the entire amount and apply to your face, décolleté, etc.
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.
The serum was carefully packaged in a sturdy box, with a transparent cap around the dropper, making it a delight to receive with such care. The bottle also has a high-quality feel. Its capacity is 18mL. The serum inside is clear, and when I first touched it, I was amazed at how it felt to use. It has a rich, oily texture, and when I spread it on my skin, it gave off a gentle warmth and a soothing sensation! I couldn't help but exclaim, "Wow..." It was so amazing, it felt like I was getting a beauty treatment. Despite the oily texture, it blends well with my skin without feeling too heavy, and the moisturizing feel is truly wonderful. With continued use, I felt like my skin's texture was improving, and it even had a radiant glow. This is a serum I would recommend especially for mature skin.
It was hypoallergenic and easy to use
The moment you apply it to your skin, you feel a gentle warmth. Vitamin C serums tend to leave a sticky feeling, but this product doesn't, and it absorbs smoothly into your skin, which is great. I'm concerned about my pores, so I'll use all 12 packets and see how it goes!