Saturday, March 1, 2014

OST Original Pure Vitamin C20 Serum [review]

I've never use any skin serum diligently these past years..
Because I'm not a person who like to apply too many skincare layers on my face XD
But, you know what? Serum is an important part of skincare routine, and it is NOT just another layer in your skin routine.. 

Well, for those of you who doesn't know the definition of serum..
Serums are thick liquid-like products with active ingredients like vitamins and anti-oxidants that are formulated with smaller molecules so the can penetrate deep into the skin. Serums are designed to penetrate and treat various skin conditions, such as redness, dehydration or lack of firmness, wrinkles, dark spots, or to brighten the skin (source:

Okay, without further ado, let me review my current favorite serum at the moment ^_^
OST Original Pure Vitamin C20 Serum
Actually I have owned this as from May 2013, but since I'm not a serum person (I'm too lazy ~_~), finally I was started to use this serum regularly around 2-3 months ago. When I received the package for the first time, the serum bottle still secured tightly in this kind of lid. It has leaked a bit and the spilled out serum became harden around the lid o_o 

all is written in hangeul -_-
What it claims:
The best selling item of 2012 - 2013
the fastest effect with Vitamin C.
Need to tone up loose skin for keeping youth.
+ Includes Pure Vitamin-C 20%.
Whitening / Recovering trouble Scars.
Removing Blackheads.
+ Ranked the best selling item    
in Singapore No.1 commerce. (2012)
+ Ranked the best selling item    
in Japan e-commerce. (2013) 

[OST] The First Boosting Essence
[OST] Vitamin Sleep 9 to 5 Crema 
Brand : OST
Volume : 30ml
All Skin Type
Made in Korea

Well, just like common serum, it comes in glass bottle, along with pipette inside~

It's currently retail USD 24.99 USD 19.99 on Wishtrend's website!

UPDATE I guess my serum has oxidized, that's why the color turns into orange. New experience just gained, I have no much experience with serum before, so I don't know. Thanks for my reader who told me this ^_^ Gonna toss out this serum soon.. *sad*

Not-oxidized OST Original Pure Vitamin C20 Serum (source: Sana's Rambling)

Texture & Scent
Anyway, it has very runny texture and easy to blend onto my face. The serum also can absorbs into my skin very well ^^ For the scent, it slightly reminds me with coffee scent.. I don't know about you, but some people said the scent is too strong. Personally for me, its scent isn't too strong and doesn't bothers me at all.
Most of time, I always use this serum before I go to bed. I'm barely use this serum in the morning (oh lazy me, LOL)

When I captured photos for this review, unfortunately the serum has oxidized.. to make it clear, the real color of this serum is like this:
Not-oxidized OST Original Pure Vitamin C20 Serum (source:

Overall Thoughts:
I love this O.S.T Original Pure Vitamin C20 Serum  It has nice runny texture, adsorbs into my skin really well and leaves matte skin result few minutes later. It's not greasy nor sticky at all 
My skin's complexion is getting better day by day. After using this for around 2 months, my skin becomes really smooth, moist and bouncy XD I'm so in love with my current skin condition. I also barely have pimples (even in my period). Psst, I can't stop to touch my skin :3 LOL

I know what you guys want from me :p It might be before and after photos?
These are sneak peek of my previous & current skin condition ^^

BEFORE  (end of Nov '13)

AFTER (February 2014)
I guess I only have sunscreen on my face for this photo. No makeup & no overly-photoshopped!
I only adjust the brightness and skin tone :) because it was a bit yellowish compared than in real life.

What I love 
+ Not sticky
+ Not greasy
+ Improve my skin texture very well
+ Refine my skin (my skin becomes so smooth )
+ Doesn't break out my skin
+ Reduce my pimples (even in my period)
+ Brightens my acne scars
+ It slightly reduces my blackheads
+ A little goes a long way

What I hate :/
- You should keep the bottle standing up, or the serum will leak from the lid
- The interlude between manufactured date & expiry date is only one year
- There's no offline store that sells this serum, you need to buy it via online


Last but not least for this photo, I only used concealer & pressed powder, 
see how my skin condition improved well? 


Where to Buy this serum?
direct link: OST products


I got information from my readers.
A serum should be finished within 1-2 months due to oxidation.
Better place it in fridge :)
Now my OST serum has oxidized and unfortunately I have to toss it out :((
It's a very good serum though.. If I knew this earlier, I would finish it earlier *sigh*
Anyway I got another new serum to replace this serum
Gonna give you further update when I'm done ^^

Thanks for reading guysss
and see ya on my next post ^___^

Note: there's no guarantee this product will works for everyone. If this product works for me, it doesn't means will works for you for sure :) skincare will gives different result to anyone. Skincare is about trial and tested. Thank you


  1. makin bening shel.. dr lama penasaran banget sama ini.. tp ga prnh kebeli wkwk malah belinya yg lain *sigh
    nyamuk lewat ya shel saking mulusnya :p

    1. hahaha berasa kaca XD
      klo ada nyamuk lewat kuteplok sih wie wkwk

  2. look like a Korean product that I used before
    Ciracle is almost same like OST you shared here
    would you like to follow each other to keep in touch?
    Please, let me know! ;)
    Follow me and I will follow you back for certain
    (leave a blog link at my blog after follow so I can go back ur blog again)

  3. siiist, katanya serum ini bagusnya dipake buat 1-2bulan aja dan disimpen di kulkas soalnya vit c cepet teroksidasi.
    kalo menurutku, serum ini bikin muka lengket.
    tapi it's good kalo di kamu cocok ^_^

    1. gitu ya? iya ktnya serum cepet bgt teroksidasi >_<
      thanks infonya yaa ^_^

  4. Sama kayak Dewie, aku juga penasaran banyak yang bilang bagus. Tapi tetep gak kebeli-beli juga hahaha. Kelihatan banget kulitmu tambah bening Vee ^_^

    1. iyaa ci ^^ haha
      tp hrsnya serum ini lgs kupake dr awal pas buka..
      denger2 ga boleh dibiarin terlalu lama :p haha

  5. Nice review... imut sekali,bikin pingin nyobain produknya.. ♥

  6. Yah tlat info. Punyaku sudah agak menguning. Buru2 msukin kulkas deh.. iya agak lengket kl dpake biasanya ta tambah cream lg abis pake.

    1. sama -_- aku jg tlat taunya hahaha..
      lengket kah? jgn lupa di kasih jeda 5 mnit ya :) biar serumnya menyerap dgn baik dl

  7. What a unique product you are using!
    I will check it out ^^

    恵美より ♥

  8. Sheel aku juga pingin beli serum.. tapi masih bingung merek apa.. takut nya kalo aku beli nanti muka aku nggak cocok.. ini ada kandungan Vit C tinggi ya? Wajah aku suka perih banget kalo kena Vit C gitu..

    1. iyaa ini bahan utamanya kan vit C itu :3 haha..
      coba serumnya innisfree/skinfood mungkin? >_< sorry ga bs kasih rekomendasi, krn aku jg jarang bgt pake serum haha

  9. I love those little ampule bottles, Something about them makes me want to collect them, thank you for the review !

    Following you :) via GFC and Google+

    1. I also want to collect its bottle XD
      you're welcome ^_^

  10. Kalo di online shop indo ada rekomendasi ga beli dmna ? Soalnya ak ga ngerti belanja d wishtrend ><

    1. Halo, maaf saya kurang tau kalo di indo, OS mana yg jual produknya wishtrend :(
      kalo mau belanja di wishtrend pembayarannya pake paypal :)

  11. efek make serum yg teroksidasi apaan? punyaku udah agak menguning. aaah sedih :(

    1. mungkin kalo udah teroksidasi sebaiknya tdk dipakai ya :( tp klo msh kuning muda mestinya masih bs ditolerir ya.. kurang tau jg sih klo pake serum yg udah teroksidasi efeknya apa >__< di mukaku (untungnya) baik2 aja

  12. what made me read this article was, i thought u made an ost song for this product. lol, babo me ><

  13. Aku pernah cobain yang ini ^^
    sayangnya muka ku yang kelewat sensitif setelah beberapa bulan malah menunjukkan reaksi alergi, jadi pemakaiannya kuhentikan .____.

  14. Waaa, untung aku mampir kesini.. Sayang banget ya shel serum kamu jadi teroksidasi. Artinya oksidasi apaan shel? Maklum ..aku kurang ngeh.hahaha
    Ngomong-ngomong apa hanya serum vit.c aja ya wajib masuk kulkas??

  15. beside use the serum, what else should we use? maybe use cleanser or etc? bcs i have acnes skin sobs


I do appreciate every comment of yours :D
Thanks for visiting my blog! Enjoy~