It was my first time to order this Vitamin C Serum. At first I am so skeptical to try this on my face since I have a very acne scar prone skin. I stay awake late every night and it makes my face looks so stressed, puffy with dark circles, bags and tired. A friend recommended using a Vit C serum or powder, so I decided to try on this product. I see a different after using this product for 2 weeks now. My skin has improved. My skin tone and color is balancing out evenly. Since it also has hyaluronic acid, I can see my acne scars fading away and soon I will have a clearer skin once again.