COSRX - The Vitamin C13 Serum

I was so excited to try this, I’ve already used 2 bottles of the C23 version, wanted to see how this compared. I use this in my am routine, sometimes my pm also, depending what other actives I’m using, the 23 I was only using in the pm. It’s light...

The packaging is simple and effective. The packaging is sober and pretty once placed on a shelf in the bathroom.

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The corsex vitamin c 13 serum is one of my favorites. I like to use it daily first thing in the morning after I wash my face. The serum it's self isn't sticky or greasy. It goes on smooth and dries evenly. You can't even tell it's on besides the f...

I also have oily skin and I refrain from using serums in the morning or afternoon because it might get humid later. I tried using this Vitamin C 13 serum and I was so happy that it lightened my skin tone and I can use it before wearing sunscreen with...

Es un producto excelente,textura líquida y con una gran concentración de vitamina c y ácido absorbico,es recomendable hacer una prueba en la piel por su alta concentración ya que suele dar reacción,antes de aplicar en cara.Con solo unas gotasx es suf...

The formulation is such a great quality, all ingredients are so good , you have ascorbic acid at its max % and vitamin E to maximise the effect , also caffein and other graea booster