C20 Pure Vitamin C21.5 Advanced Serum

This small bottle might not look like much, but it's one of the most popular Korean skin care products there is! Well, actually, it's an upgraded version of it. Many call this vitamin c serum their holy grail skin care product. So I was really excited when Wishtrend.com sent it to me a few months ago.

Product info
Brand: C20
Volume: 30ml
All skin types
Made in Korea

Tips: Keep in fridge to use for a longer time.
Ingredients: Hippophae Rhamnoides Water (70%), Ascorbic Acid (21.5%), Sodium Lactate, 1,2-Hexanediol, Sodium Hyaluronate, Panthenol, Cassia Obtusifolia Seed Extract, Allantoin, Xanthan Gum, Ethyl Hexanediol

So basically, the serum contains 21,5% of pure vitamin C. That's more than any face cream will ever have. When I first read what it's supposed to do: rejuvenate and brighten skin, restore lost elasticity by stimulating collagen production, I was quite doubtful to be honest. However, this vitamin C serum is the real deal! I've never tried anything like it before.

The reason I'm writing this review now, months later, is because I believe skin care products should be tested out thoroughly before one can state their opinion on it. 

Anyway, the truth is I loved it at first use, waking up to soft tight skin & all that. When I continued using it, I noticed actual improvement in my skin texture. Vitamin C also has strong antibacterial properties, so I guess that has helped me too. In conclusion, I'm now obsessed with this product and don't think I can live without it.

If you are interested & want to try it, you can purchase the C20 Pure Vitamin C21.5 Advanced Serum from Wishtrend for $24.99. Personally I don't think it's too much for such a great product. What is more, one bottle lasts you for a while.


  1. wow this product sounds amazing! I might consider trying this!

  2. Interesting! How often do you use it?
    And how long before you noticed the changes?
    Need this vitamin C serum >.<

    thanks for sharing!

    1. I use it twice a day after cleaning my face! Well, sometimes once, because I'm lazy. :D
      Anyway, it should take at least two weeks to notice bigger changes. :)

  3. I want to get this so badly, my skincare routine will be complete with it :D I also seen a lot of comparisons with the original version, and most people prefer the upgraded 21.5 version


  4. This looks like an interesting product. I may grab one of these during my next wishtrend haul!


  5. Wow, super useful! Thank you a lot for this post!



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