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[O.S.T] C20 Original Pure Vitamin C20 Serum - 30ml

  • Retail Price
  • Gift
    Gift Sample
    Credit Card Benefit
    0% Interest Instalment Plan(max 24 months) Details
  • Shipping From
    South Korea
    Shipping RateOverseas

    Qxpress - $11.06

    Overseas Shipping
    United States -$11.06~ See more
  • Item Qty
    plus count minus count
  • Currently unavailable

Customer who recommended this item
62 (Based on 66 reviews)
Customer Satisfaction Score
  • Product 90%/100%
  • Price 90%/100%
  • Delivery 90%/100%
  • Service 90%/100%
Place of origin
KOREA Condition New Product
Shipping From From Overseas (South Korea)
Payment Method VISA, MasterCard, JCB Card, PayPal, E-Nets, AXS, Convenience Store, Cash Deposit, Q·account
After sales service Please contact seller or manufacturer service center.
Return/Exchange Need to return item to seller's address by using post office or other shipping service.
BOOKMARK 1 2 3 4 5 6 7

Photo Review (28)

Customer Review (66)

Customer Review board
Rating Feedback Date Written by
Highly Recommend Jun 05, 2017 swe*******
Highly Recommend May 31, 2017 ckc*******
Highly Recommend May 31, 2017 yai*******
Highly Recommend May 30, 2017 jer*******
Recommend May 29, 2017 soh*******
Highly Recommend May 28, 2017 wei*******
Highly Recommend May 27, 2017 ohs*******
Highly Recommend May 27, 2017 sta*******
Highly Recommend May 22, 2017 hei*******
Highly Recommend May 20, 2017 Che*******

Seller Information


  • Address : Donae-dong, Deokyang-gu, Goyang-si, Gyeonggi-do 958 Daeyeong-plaza 7F
  • Available during:월~금: 오전 9시~오후 6시 토: 오전 9시~ 오후 1시 일, 공휴일: 휴무
Item Q&A(9)
No. Question & Answer Member Date Status
27312271 restock suz******* 2017-06-20 Answered
hello, when will this be restocked?
[Re] restock
Hello, dear
We are so sorry, but it is discontinued..
Why don't you find out any nice replacements? :)
If you have any further questions or concerns, please do not hesitate to contact us
We consider customer satisfaction as priority and look forward to doing business with you
Thank you :)
26955438 Member's Card yai******* 2017-05-22 Answered
Hi seller,
I have received a 'New Member's Gift' card for my previous purchase from you. May I know how to join in order to be a member in RoseroseShop? Thank you.

Yai Yai
[Re] Member's Card
You can see our site's link in the card
Please visit and register to the site. Then you will be given the credit
Thank you :)
26872660 Inquiry for the item from jnp**** jnp******* 2017-05-16 Answered
Is this authentic from Korea? Also, which shop can I find this if I were to go to Korea? Is it available at Aritaum?
[Re] Inquiry for the item from jnp****

Hello, my friend!
I can proudly guarantee that all cosmetics that we sell on our sites are 100% genuine
This is because we always bring all cosmetic products from their MAIN OFFICE.
Furthermore, All are from South Korea and with my 15 years of experience, I have never sold fake items.
Sellers in Korea can also never get fake items.. Seriously.. I can 100% guarantee

But, sorrily, you can not visit us because we don't have an offline shop.. sorry for that!
26397872 Inquiry for the item from dro**** dro******* 2017-04-06 Answered
Hi are you selling the c21.5 now? Thanks
[Re] Inquiry for the item from dro****
It was a limited item so no more!
23198224 Manufacturing Date mic******* 2016-07-24 Answered
Hi, what is the manufacture date and how fresh is the stock? Want to maximize the time to use it before it oxidizes. Thanks for the help.
[Re] Manufacturing Date
Hello, my customer!
We know the C20 serum is easy to spoiled with short term,
So we are handling its expiry date carefully, you don't need to worry about that :)

16097016 No receive item pin******* 2015-01-13 Answered
Hi, I haven't receive my item until today. PLS check (:
[Re] No receive item
Hello customer and thank you for letting me know as to your questions
I am very sorry to hear that you still have not received your goods until now
Before taking alternative actions, could you please do me a last favor?
How about checking out the post office nearby you ..?
This is because it is very strange happening even it has quite long time passed since dispatching your item...
Plus, quite number of customers have found their goods in the either custom or Post office..
The parcel that we used is Korea Post ..
Sincerest regards`
15918393 C21.5 cor******* 2014-12-29 Answered
Will you be bringing in the new C21.5 soon?
[Re] C21.5
Dear customer,
We will approach you once it is able for sale!
And try to keep close with our web site!
Thank you! :)
15029149 Order Number: 47141935 ruh******* 2014-10-22 Answered

I am referring to Order Number: 47141935 on Sep 29, 2014, whereby I ordered the OST Original Pure Vitamin C20 Serum. The serum was leaked as shown in the picture attached.

Please advise.

Thanks and Regards,
[Re] Order Number: 47141935
Hello, friend

We sincerely apologize to you for this inconveniences
I know this is so frustrating for your and you were really upset for this situation
But, for us, we can see it leaks so little and it seems that amount of leaking doesn't make lots of difference..
So we are really sorry but, we would like to add a lot of and high-quality samples to your next order for our excuse If you leave a memo on your next order..
I will tell our shipping agent not to make this happening strongly..
I really hope you understand....

Looking forward to hearing from you soon
[Re] Order Number: 47141935

Since it has leaked and the serum turned out to be a black color liquid form, I avoid using it in case it create an impact on my skin. Just check with you if I can get it replace with a new set?

[Re] Order Number: 47141935
Dear customer
First of all, I would like to sincerely apologize for this unexpected matter which may cause you inconvenience. <--

please pay for shipping fee again.

As you requested, I would like to re-send your item again, your item will be dispatched soon after you please pay for shipping fee again. You don't have to send it back
I hope you will feel better by doing this and hope to do business with you in the future again.
Sincerest regards

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