OSAJI
OSAJI Enrich Bio Duo Set (Serum & Oil), 30ml x 2
OSAJI Enrich Bio Duo Set (Serum & Oil), 30ml x 2
@cosme rating: 5.5/7.0
OSAJI's bestselling serum and skin oil limited edition set
✓ 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] - Enrich Bio Serum 30mL - Enrich Bio Oil 30mL This limited-edition set includes LOS AJI's best-selling serum and skin oil from the same series at a special price. This skincare product focuses on the moisture balance of the skin's resident bacteria, leading to a more stable skin environment. It's a great treat for yourself or a gift for a loved one. "Enrich Bio Serum": Use it as a pre-serum immediately after cleansing your face to help create healthy, beautiful skin. "Enrich Bio Oil": Replenishes the oils needed for mature skin, which begins to produce less sebum, resulting in plump, firm skin and a radiant glow. The soft and elegant scent of geranium and damask rose.
Ingredients
Enriched Bioserum: Water, Propanediol, Glycerin, Alpha-Glucan Oligosaccharide, Pentylene Glycol, Sphingomonas Ferment Extract, Hydrogenated Lecithin, Phytosterols, Calcium Lactate, Magnesium Lactate, Potassium Lactate, Sodium Lactate, Lactic Acid, Chlorella Extract, Polymnia Sonchifolia Root Juice, Maltodextrin, Lactobacillus, Caprylic/Capric Triglyceride, Jojoba Seed Oil, Polyglyceryl-10 Oleate, Polymyristate Glyceryl-10, carbomer, potassium hydroxide, hexyl dimethylolpropionate, pelargonium graveolens oil, rosa damask flower oil, rosa canina fruit oil, Enriched Bio Oil: caprylic/capric triglyceride, squalane, jojoba seed oil, camellia seed oil, sunflower seed oil, tocopherol, chlorella extract, rosemary leaf extract, pelargonium graveolens oil, rosa damask flower oil, rosa canina fruit oil, sandalwood oil (all moisturizing ingredients)
How to use
Use "Enrich Bio Serum" immediately after washing your face. Take an appropriate amount and massage it into your skin. Use "Enrich Bio Oil" by taking an appropriate amount and massage it into your entire face or areas where dryness is a concern.
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.
This was my first time using it, but it was smoother than I expected and very easy to use! My skin has been feeling great for days! I'll definitely buy it again! I'm grateful that I was able to try something I've never used before as a gift from Suzykirei!
I received this as a gift from Suzykirei. One dropperful was just the right amount for my face and neck. It absorbed easily and left my skin feeling plump and supple. The subsequent toner absorbed well, and I felt my skin was more hydrated than usual. My skin condition, which had been prone to irritation, has stabilized, and I've noticed that the redness around my nose has gradually subsided. The lovely geranium and rose scent has made my skincare routine a soothing experience. While the results aren't immediate, I believe this is a gentle serum that gradually improves skin condition with continued use. I'm looking forward to seeing how my skin condition changes once I finish the bottle. [Update] After using it for two weeks, I feel like my skin's redness has subsided and my complexion has become one tone brighter. My skin texture has improved, my pores are less noticeable, and my skin irritation has disappeared. Even in this dry season, my skin remains moisturized and in excellent condition. I plan to buy more when I run out. I'm also changing my rating from 6 stars to 7 stars! I highly recommend this serum to anyone looking to improve their skin condition.
Since the beginning of this year, I've been concerned about dryness during the day, so I wanted to add something to my skincare routine. This thick serum absorbs easily into the skin. The geranium scent is very soothing. I've been using it morning and night for three days, and my skin has become smoother, and I no longer worry about dryness during the day. It's been a while since I've found a product that I can see results from in just a few days! I'm looking forward to seeing even more results once I've used it all.
I received this as a gift from Suzykirei and have been using it for about two months. I put about three drops in my hand and apply it to my face and neck immediately after washing my face, and it leaves my skin feeling plump and supple. I have sensitive skin, but so far it hasn't irritated me and I like the scent. I'd like to continue using it!
I received this as a gift. My skin gets dry in the winter, so I usually use Cosme Decorte Liposome as a pre-treatment, but this product didn't dry out my skin at all, which was great. I've been using it for about 10 days, and I love how smooth my skin feels and how it refines my texture. I'm excited to see what kind of effects I'll see with continued use, so I'll buy it once I run out.