Firstly I loved the bottles of the X3 regime. They are packaged in a normal looking box, the box has all the information printed on it about the product claims and ingredients, directions etc. The slender pump bottle doesn't have much printed on it at all. Beautiful red with a silver pump cap. The serum itself has a subtle light scent and the pump top ensures you have just the right amount despensed.
All that lovely-ness aside. I don't know what purpose the serum serves. I understand that it is for resurfacing the skin, but I can't say my skin felt any different. It just adds to the steps in the regime and makes the process feel even more spa like. So in that way it feels a little bit like a treat for you skin. Honestly though, I am sure my skin would be just fine without it.
I am loving this product. I use it every day and night before I moisturise. It leaves my skin feeling amazing, I love it. I have noticed the fine lines are not as bad (getting to 40 really takes its toll on your skin!). It smells lovely. A little bit does definitely go a long way. I smooth it down my neck as well. I honestly can't get enough of this product. I think it is good value for money. I like the packaging and it is user friendly. If you are thinking of buying it - buy it, you won't regret it.