Perfect One
Perfect One Moisture Serum, 30ml
Perfect One Moisture Serum, 30ml
Rated 5.5 out of 7.0 by Japan's largest beauty community.
Moisturizes every corner of the stratum corneum, leaving skin firm and supple
✓ 100% authentic. Direct from brand or official stores only
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Track your order via your national carrier (USPS / Royal Mail)
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What it is
Introducing the serum type of the all-in-one gel "Moisture Gel"! The push-type bottle makes care easy. Contains the original ingredient "fermented purple collagen". In addition, it contains more penetrating VC collagen than Moisture Gel, which evenly circulates moisture to every corner of the stratum corneum, leading to firmer, healthier skin.
Ingredients
Water, glycerin, BG, propanediol, diglycerin, betaine, PPG-14 polyglyceryl-2 ether, water-soluble collagen, hydrolyzed collagen, succinoyl atelocollagen, isostearoyl hydrolyzed collagen, succinoyl hydrolyzed collagen sodium ascorbyl phosphate, lactobacillus/hydrolyzed collagen ferment filtrate, hydroxyproline, hydrolyzed hyaluronic acid, sodium hyaluronate, hydrolyzed elastin, water-soluble proteoglycan, ceramide EOP, ceramide NP, cerami NG, Ceramide AP, Glycine, Alanine, Serine, Glutamic Acid, Proline, Centella Asiatica Leaf Extract, Pomegranate Fruit Extract, Mandarin Orange Peel Extract, Olive Leaf Extract, Sagarame Extract, Passiflora Edulis Fruit Extract, Melissa Officinalis Leaf Extract, Lemongrass Leaf/Stem Extract, Duckweed Extract, Bergenia Ligulata Root Extract, Wild Thyme Extract, Lithospermum Officinale Root Extract, Poly(1,2-butanediol)-4PEG/PPG-29/9 Methylglucose, Pentaerythritol, Tetraethylhexanoate Thrityl, phytosteryl/octyldodecyl lauroyl glutamate, trisodium ascorbyl palmitate phosphate, inositol, niacinamide, isostearic acid, glyceryl glucoside, isomerized sugar, glycosyl trehalose, glyceryl amide ethyl methacrylate/stearyl methacrylate copolymer, polyquaternium-51, hydrogenated retinol, squalane, acetyl hydroxyproline, sodium alginate, polyglutamic acid, pentylene glycol, hydrogenated lecithin , (Acrylates/C10-30 Alkyl Acrylate) Crosspolymer, PPG-13 Decyltetradeceth-24, Dimethicone, Potassium Hydroxide, Pentasodium Pentetate, Hydrogenated Starch Hydrolysate, Caprylic/Capric Triglyceride, Phytosterols, Silica, Lactic Acid, Xanthan Gum, Soybean Sterols, Hydrogenated Phosphatidylcholine, Behenyl Alcohol, Cholesterol, Palmitic Acid, Lauryl Betaine, Chitosan, Phenoxyethanol, Orange Peel Oil, Roman Chamomile Flower Oil
How to use
Take an appropriate amount (2 pumps) in your hand, take the serum with your fingers, spread it on both cheeks, and gently blend it into your forehead and chin, from the center of your face outwards.
We ship internationally from Japan!
Frequently Asked Questions
Are the products you sell authentic?
Authenticity is 100% guaranteed. We source directly from the brand, or from official stores within Japan.
All products are fresh off the shelves and never outdated.
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.
I'm lazy, so I'm happy that this is an all-in-one product. It's very moisturizing, but I also like that it's not sticky and absorbs quickly!
Perfect One Moisture Serum: This single product has six functions: lotion, emulsion, cream, serum, pack, and makeup base, making it ideal for those who want to save time. It penetrates deep into the stratum corneum and contains the "Water Cycle Complex" that circulates moisture for lasting skin hydration. Its thick texture leaves your skin feeling fresh and moisturized.
It's thick, but when you apply it to your skin it penetrates easily, leaving your skin feeling moisturized for hours. It's not sticky, so it's great for use before applying makeup in the morning. It leaves your skin feeling plump, so it's a reliable product when you're concerned about dryness or roughness. With a texture and feel that makes it easy to use every day, it's recommended as a skin care item that emphasizes moisturizing power.
I tried out the all-in-one gel serum type "Perfect One Moisture Serum," provided by Shinnihon Pharmaceutical Co., Ltd.! This all-in-one serum is perfect for your morning skincare routine after a hectic bath. Its thick texture is refreshing and non-sticky, and it feels great on the skin. Its moisturizing feel is great for dry skin, so I think this alone is enough before applying makeup. The recommended two pumps were enough to thoroughly moisturize my face and décolleté, and it spread easily. I plan to try using it with a cream or other products as the dry season approaches.This all-in-one serum serves six purposes: lotion, emulsion, cream, serum, mask, and makeup base, making it the perfect choice for those times when you want to quickly complete your skincare routine. *¨*.*¨*. I had the impression that all-in-one products tend to feel a bit lacking, but I really liked the moisturizing feel and ease of use (how well it absorbs into the skin). It's also great for moms who want to save time while raising children! *Perfect One Moisture Serum*Price: ¥4180Volume: 90ml
I have a small child, so I don't have much time after bath time. This push-type, all-in-one product is just what I've been looking for! It's smooth, but doesn't feel dry even at this time of year.