This product does all sorts of wonders to the skin. I fell in love with it the minute I received it. The white bottle looks slick and professional. I also love the fact that it has a pump to dispense the product - just makes using it that much better because you dispense just the right amount and don't waste the product by accidentally over-spilling. The product appears light yellow but appears transparent when applied to the face. It stays true to its name of perfecting serum by helping to target and treat several signs of skin damage and helps boost moisture. Almost like having a personal dermatologist treatment in the comfort of your own home! I have no dark marks so cannot comment on that front but I will say that this product has reduced my breakouts significantly and left my skin looking even-toned. The formula does not have a noticeable smell and it is super gentle on the skin so its perfectly fine to apply near sensitive areas such as the eyes and lips. Great product overall!