I totally agree with the sunscreen advice - it should be part of your every day routine.
As far as products go, I recently read a
beauty ingredient information article about whether or not GOLD (now a semi-popular ingredient in some antiaging products) has any real benefits... one dermatologist in the story recommended
Retinol (Vitamin A) as her favorite antiaging ingredient.
On the sensitive skin subject - I also read this at beautyXpose.com - make sure you know what "hypoallergenic" does and does not mean... it's totally astounding!