http://www.amazon.com/Vitamin-Serum-Face-AntiOxidant-Treatment/dp/B00FDK0V4M
Direct sun exposure and smoking causes free radicals that harm your skin.
Smoking leads to much more (and earlier) face wrinkling than direct exposure to UV rays. Vitamin C serum is an antioxidant which is put on to the skin and reduces the effects of the free radicals, lowers wrinkles and boosts collagen.
see also video https://www.youtube.com/watch?v=MXW3V2h6OLo
