02 August, 2014

Review: OST Original Pure Vitamin C20 Serum

Have you ever asked yourself how much Vitamin C do you consume everyday? Do you drink juices hoping that Vitamin C is more easily absorbed into the body? Well, the fact that Vitamin C is important for our body as an antioxidant is already a known fact, but do you know that your skin needs it very much too?

OST Original Pure Vitamin C20 Serum (30ml) @ RM99.00 RM79.20

......introducing to you the Vitamin C 'juice for your skin' from Korea! Packed with natural antioxidants and 20% L-ascorbic Acid, it is a replenishing skincare for all skin types at ALL ages.

Why does your skin need to "drink" Vitamin C?

Vitamin C serum is not something new to me, I have similar product from other Korean brand last year and I'm really satisfied with the result! By directly applying the serum onto skin, the Vitamin C effect is definitely faster, with added peeling function.  

The Power of Vitamin C
- Removing blackheads
- Protection for your skin
- Recovering troubled scar
- Help prevent premature aging
- Softening and moisturizing
- Removing dead skin cells
Pore tightening

Let your skin have 40 Grapefruits, 120 Strawberries, 200 Oranges everyday!

Having said that this serum is concentrated with Vitamin C that is equivalent to 200 oranges, I'm surprised that its acidity is quite low. No tingling sensation to the skin at all! In fact, it feels mild and refreshing for my skin

Inside the tinted 30ml bottle is the acidic serum that looks like orange juice. The box includes a dropper for the ease of consumer because a little serum is sufficient for the whole face and neck. 

Use the dropper carefully to take only 2-3 drops of serum and apply every NIGHT, because too much of the concentrate may cause tingling effect on the skin. But I love the way it suits even the most sensitive skin because it soothes the skin very well.

If you find it too rich, it is best to mix several drops of serum with toner to make your skin refresh without sticky feeling. My night beauty regime is then followed by lotion and cream to lock its goodness into the skin.

After 2 weeks of using C20 Serum...
The pore tightening effect is impressive! I finally found the cure for my serious enlarged pores issue! The highly concentrated pure Vitamin C promises to slowly revitalize your tired skin, but remember to be hardworking in using it 

Overall, this miraculous concentrated serum amazes me alot. I'm surprised with its ordinary ingredient that works wonder on the skin. My skin loves 'drinking' it like a fresh orange juice with loads of goodness. Hopefully as I continue using it for months, I can have beautiful skin again 

*Sediment might occur in the bottle neck and the bottom but it is safe to use. 
Browning liquid is natural phenomenon of highly concentrated Vitamin C serum.

OST Original Pure Vitamin C20 Serum is available at Natta Cosme, visit 'em to get discount!

For more updates on Natta Cosme, please visit


  1. Wow! Your skin looks smoother! and in 2 weeks, that is impressive :D Vitamin C is very important.

  2. Hi, bought the serum from nattacosme too. if any vitamin c serum is not in clear colour (despite thinking it related to orange), it is oxidizing. when it turns brown, it is already oxidized, which is cannot be used anymore. safe to use, yes, but pretty much useless. you can see the comparison with that stock image and your image of the serum.

    despite keeping it in the refrigerator, mine is turning slight yellow already. it needs to be used within 3 months.

    maybe you can read up on this: http://www.skinandtonics.com/o-s-t-original-pure-vitamin-c20-serum-review/


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