I live in Maryland where for about 6 months of the year it is really hot and really sticky.  I've got acne prone skin still up into my late 30s.  The Skyn Iceland products are outstanding!  They are light enough to moisturize without being heavy feeling and without making my skin even more oily than it is.  I've tried other brand names but I keep going back to the Skyn Iceland line due to their quality.