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[BY WISHTREND] BY WISHTREND best products: C21.5 Serum/ Mandelic acid/ vitamin cream


Customer who recommended this item
840 (Based on 873 reviews)
Customer Satisfaction Score
90%
  • Product 90%/100%
  • Price 90%/100%
  • Delivery 90%/100%
  • Service 90%/100%
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Manufacturer/
Place of origin
Condition New Product
Shipping From From Overseas (South Korea)
help
Material
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.
Brief Description Pure vitamin C 21.5%, perfect for brightening
BOOKMARK 1 2 3 4 5 6 7

Photo Review (333)

Customer Photo Review board
Feb 19, 2018
des*******

Highly Recommend First Vitamin C

Excited to try out the effect of vitamin c.

OPTION:A. C21.5 Serum | To add:B. NONE | Free Gift:A.[BY WISHTREND] Hair ties

+ Add this option
Feb 13, 2018
Jea*******
Feb 06, 2018
gra*******

Highly Recommend Received ok ok ok

Received in good order thumbs up repeat order

OPTION:A. C21.5 Serum | To add:B. NONE | Free Gift:A.[BY WISHTREND] Hair ties

+ Add this option
Feb 04, 2018
hey*******

Highly Recommend Fast delivery

Very fast delivery. Great products. 3rd purchase

OPTION:E. C21.5 serum+ vitamin 75 maximizing cream(+S$30.76) | To add:B. NONE | Free Gift:A.[BY WISHTREND] Hair ties

+ Add this option
Feb 03, 2018
cyu*******

Customer Review (873)

Customer Review board
Rating Feedback Date Written by
Highly Recommend Feb 19, 2018 des*******
Highly Recommend Feb 19, 2018 Ali*******
Highly Recommend Feb 16, 2018 shi*******
Highly Recommend Feb 16, 2018 shi*******
Highly Recommend Feb 13, 2018 Jea*******
Highly Recommend Feb 13, 2018 ber*******
Highly Recommend Feb 11, 2018 lav*******
Highly Recommend Feb 08, 2018 pin*******
Highly Recommend Feb 07, 2018 fif*******
Highly Recommend Feb 06, 2018 gra*******

Item Q&A(159)

Status
Question & Answer
Date
Member
Answered
2018-01-09
m.p*******
User

Hi,
I have already made a purchase & got my order. My stock was from Nov 2017 (manufactured date). I have not opened my vitamin C serum yet. Is it okay if I open it on February and start using then? Is it safe? Will it get oxidize by any chance? Within how long should I use it?
Thank you.

User


Yes it is fine. It is best to use the vitamin c serum within 2-3 months because that is when it is the most fresh. :)

We hope this helps!

Answered
2018-01-09
m.p*******
User

Hi, I have already made a purchase & got my order long time back. I just want to check how long can the vitamin c last? I have not opened it yet. I plan to bring it overseas and use it from there. It shows the manufactured date as Nov 2017 (stock). So within how long can I use this product? Is it okay if I open it on February and start using then? Is it safe? And within how long should I finish it?
Thanks.

User

Hi there,

Yes it is fine. It is best to use the vitamin c serum within 2-3 months because that is when it is the most fresh. :)

We hope this helps!

Answered
2017-12-13
xua*******
User

Hello, do I use the serum before or after moisturizer?

User

Hi there,

Thank you for reaching out to us. You should use it before the moisturizer.

We hope this helps!

Answered
2017-12-10
mae*******
User

Hi,
May I know what’s the difference between the C21.5 serum and the my signature C Source that you are selling?

User

Hi there,

Thanks for reaching out to us. They are both vitamin C serums. The main difference is that the C21.5 contacts 21.5% vitamin C, where the Signature C source containts 20%. We hope this helps :)

User

Noted with thanks!

User

No problem, it's our pleasure to help!

Answered
2017-11-01
my_*******
User

What kind of facial wash can I use together with C21.5 serum?

User

Hi there,

Thank you for reaching out to us. You can generally use any face wash of your choice. We would only recommend you to avoid using any products that contains high level of AHA, BHA (include Betain Salicylate), Retinal, Vitamin C (Ascorbic Acid). The COSRX Good Morning Low PH Face Wash is a good option :)

We hope this helps!

Best,

Answered
2017-10-30
ras*******
User

Hi,
1) Is it necessary to keep C21.5 serum in the fridge?
2) what is the shelf-life of C21.5 Serum upon opening?

User

Hi there,

Thank you for reaching out to us. Due to the high percentage of natural vitamin C in the product, it is recommended to store it out of direct sunlight and high temperatures, as this can damage the product. Storing it in the fridge can also help it last longer.

The serum is still fresh and best to use 3 months upon opening.

We hope this helps!

Best,

Answered
2017-10-18
wil*******
User

Dear Wishtrend, I just received my 21.5. As I still have quite a bit of my current skincare, I would like to find out if I can use them together with Vit C (as after watching your video, it seems Vit C needs careful pairing)

Toner (100% Pure Rosewater with Glycerin): As this adjusts PH level, will it affect the efficiency of 21.5? Or cause any adverse reaction?
Moisturizer: I am currently using Laneige Water Bank... do you have any experience in using Waterbank on top of 21.5?

User

Hi there,

Yes, I think you can use them. you need not to use aha/bha/retinol with vitamin c. Also, there is one product that I want to suggest is
[by wishtrend] vitamin 75 maximizing cream.
This cream is good at maximizing the effect of vitamin c, so it will boost the effect of it.
Please check:
http://list.qoo10.sg/item/BY-WISHTREND-VITAMIN-75-MAXIMIZING-CREAM-50ML-FREE-15ML-MORE/505614456?&sellerview=on

Thank you
BEST REGARDS,
WISHTREND

Answered
2017-10-15
che*******
User

Hi, when will the C21serum be in stock again?

User

Hi there,

this item will be on stock within this week :)
I am sorry and hope your kind understanding.

Thank you
BEST REGARDS,
WISHTREND

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211 Teheran-ro, Gangnam-gu, Seoul 14F Wishcompany
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