Q: Would it work to use the Renormalizing Serum on its own underneath my heavy duty sunscreen and skip the moisturizing step? This of course would be just during the day, at night I would continue with the Rejuvenating Day Cream.

A:  For summer I often use the Serum as my moisturizer and apply sunscreen over it.  That being said, please consult with your dermatologist regarding using an SPF 60. Higher is not necessarily better and higher sunscreens often pose safety risks without providing incremental protection gain.