O.S.T Original Pure Vitamin C20 Serum

Serums are thick liquid-like, ultra-intensive and lightweight formulas that infuse skin with a deep concentration of moisture and nutrients. It is formulated with smaller molecules so it has the ability to penetrate deep within the layers of your skin. Serums have heavy-duty benefits and powerful effects on one’s skin that’s why I have always wanted to try it.

O.S.T Original Pure Vitamin C20 Serum

A couple of weeks ago, my wish has been granted. WishTrend was kind enough to send me an O.S.T Original Pure Vitamin C20 Serum to try and review. Hooray to my first ever facial serum!

O.S.T Original Pure Vitamin C20 Serum

O.S.T Original Pure Vitamin C20 Serum is a replenishing facial treatment infused with Vitamin C, a powerful antioxidant which is known to boost collagen production in the skin, making it more plump and dewy, erase signs of premature aging, heal acne, even out skin tone, and neutralize free radicals.

O.S.T Original Pure Vitamin C20 Serum

Besides Vitamin C, the serum also contains other beneficial skincare ingredients such as the moisturizing sodium hyaluronate and rose extract, camellia extract, panthenol and beta glucan to soothe sensitive skin. It also has anti-aging Niacinamide, Vitamin E and Coenzyme-Q10.

O.S.T Original Pure Vitamin C20 Serum

Also known as “red bottle” in Korea, this serum has been hailed as the best selling product in 2012 to 2013. It’s powerful effects include revitalizing, removing the dead skin cells, whitening, pore tightening, recovering the trouble scars, and removing blackhead.

O.S.T Original Pure Vitamin C20 Serum

How to use: Apply after cleansing and toning. Use two (2) to three (3) drops and smooth in gently all over the face. Initially, a slight tingling may be experienced. Mixing with several drops of O.S.T Original Pure Vitamin C20 Serum and toner makes your skin refreshed without being gooey. After applying the serum, it is best to put moisturizer on your face.

O.S.T Original Pure Vitamin C20 Serum

What I like: The serum is contained in a tinted glass bottle with a screw cap. It has a separate glass dropper with black rubber tubing. This makes the application of the serum very convenient, and hygienic too. Using the glass dropper, you can easily control the amount of serum that you want to use on your face and neck. When it comes to the results after weeks of usage, I can say that I love it! It reduced the blackheads I have on my nose and it lightened some pimple marks on my face too. But what made me love the serum most is it made my skin soft and moisturized!

O.S.T Original Pure Vitamin C20 Serum

What I don’t like: To be honest, I wanted to give up on this serum after using it for a couple of days. Aside from the stickiness of the serum, I couldn’t stand the smell after application. For me it was kind of weird, especially when I wake up in the morning. It has this citrus-y + medicinal scent which is a turn-off for me. This also caused me minor breakouts after two (2) to three (3) days of use. Good thing, those instances did not stopped me from using this product. I’m really glad it gave me excellent results!

Where To Buy

O.S.T Original Pure Vitamin C20 Serum is available at WishTrend. You can get this for only $19.99 only! Original price is $24.99. If you want to get this product, shop here: www.wishtrend.com/skin-care/502–ost-original-pure-vitamin-c-20-serum.html

Visit WishTrend’s website to see more of their products. You can also follow them on their social media sites for updates.

  • Website: www.wishtrend.com
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Disclosure: Classy Sweets received the product(s) mentioned for free for evaluation purposes. Regardless, all thoughts and opinions expressed are solely from its author and have not been influenced by the product sponsor.



  1. Zwitsy

    December 9, 2013 at 10:10 am

    I have never used this product before, but I like your review…

  2. Chubskulit Rose

    December 10, 2013 at 1:54 am

    I have a very strong sense of smell so I don’t think I could use this one. Hehehe.

  3. Aisha Kristine Chong

    December 10, 2013 at 10:13 am

    I haven’t used up this product but mukang okay sia. Plus a serum is always good for our skin.

  4. Chubskulit Rose

    December 10, 2013 at 11:19 am

    This reminds me of the current shampoo I am trying, it stinks but it does a lot of good things on my hair and scalp.

  5. Ronel

    December 10, 2013 at 1:16 pm

    I’ve tried this already and the effect was really great. I do recommend this serum to all who had these backheads and whiteheads at their faces. It can help whiten the skin too. :)

  6. Peachy

    December 10, 2013 at 8:04 pm

    I haven’t tried using serums yet. I’ll try one in the near future.

  7. Mary Anne Vinzon

    December 10, 2013 at 9:55 pm

    You are so lucky to have such kind of skincare product. I hope I can also try it for myself.

  8. Healy Harpster

    December 11, 2013 at 11:37 pm

    I don’t have the need of this products yet but, it is helpful to know where to buy when time comes for me to use them.

  9. jheylo

    December 12, 2013 at 5:05 am

    Sounds like a very promising product. I need facial cleanser and I will look into it.

  10. Sherry Ann Gole Cruz

    September 8, 2014 at 4:23 pm

    Wish I could try this, I’m having a very dry skin!

  11. Ros

    October 21, 2014 at 2:46 am

    Will you repurchase this? (:

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