Glenglassaugh's whisky was once solely used in blends. During its early days, it was a component in Teacher’s and later on was part of Famous Grouse, Cutty Sark and Langs.
Since 2005, its focus has been on creating single malt whiskies and in 2013 it was taken over by Benriach. Glenglassaugh has since continued to concentrate on single malts with a succession of new aged releases and several innovative expressions.