Seinmu
Seinmu Beaute Ronde, 30ml
Seinmu Beaute Ronde, 30ml
@cosme rating: 5.7/7.0
A skincare serum based on the concept of "targeted care."
✓ 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
A skincare serum born from unique research and cosmetic science technology, based on the concept of "targeted care." This is a new concept serum developed based on the idea of beauty care. Focusing on "areas of concern," it smooths skin that is losing firmness. The brand has researched and developed it, using carefully selected ingredients and formulations. It replenishes moisture to skin that tends to dry out with age, such as the face, neck, décolleté, bust, hands, and delicate areas, leading to a radiant appearance. The formula is easy to incorporate into daily care, and it is attentive to women's desire to "be beautiful." We aimed for high satisfaction by manufacturing purified water using our unique technology, nano-processing of beauty ingredients, a penetration design that reaches the stratum corneum (*1), and paying attention to the texture. You can enjoy the unique fragrance of Seinmu, a unique blend of French fragrances. The bottle is made of glass, demonstrating our commitment to environmental considerations. 30ml: 2 months supply / 100ml: 6.5 months supply *1 To the stratum corneum *This is a description of the ingredients and does not indicate efficacy or effects.
Ingredients
Water, PG, BG, Hydrogenated Polyisobutene, Pentylene Glycol, Acetyl Hexapeptide-38, Anemarrhena Asphodeloides Root Extract, Glycerin, Denatured Alcohol, Mangosteen Peel Extract, Chlorella/White Rubin Protein Ferment, Quince Seed Extract, PCA Isostearate PEG-40 Hydrogenated Castor Oil, Fragrance, Sodium Hyaluronate, Dipotassium Glycyrrhizate, Soluble Collagen, Soluble Elastin, Carbomer, Xanthan Gum, Potassium Hydroxide, Apple Fruit Cell Culture Extract, Lecithin, Isomalt, Grape Fruit Cell Extract, Phenoxyethanol
How to use
Apply directly to bare skin first. Use a pearl-sized amount for the face and two pearl-sized amounts for the breasts (based on a C cup). Apply to the area of application first when your body temperature is high after a bath. For the bust, apply while massaging inwards in a figure-eight motion. For the face, apply from the center upwards towards the upper part of the face. Then proceed with your usual skincare routine. Use first after a bath, and finish by coating with lotion or oil. The key to accelerating results is to avoid using toner or booster.
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.