Skinceuticals C&E Ferulic($153):
This serum combines proven antioxidant vitamins C and E with ferulic acid to maintain antioxidant performance. It enhances and protects against damaging UVA/UVB rays to better prevent premature signs of aging, while stimulating collagen production to help diminish the appearance of photodamage.
How to use: Put four drops in the palm of your hand and spread over entirety of face. Use mornings only.