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: http://www.apivita.com/new/natural-serum/)
Okay, without further ado, let me review my current favorite serum at the moment ^_^
OST Original Pure Vitamin C20 Serum
Packaging
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