Epigenetics is the way in which cells control their genetic activity. One of the most common ways is through DNA methylation - when methyl groups are attached to DNA to effectively 'turn off' the gene that they've been added to. Aging is strongly associated with changes to DNA methylation, and as skin cells age methyl groups are lost, reducing genetic control.

It's thought that increasing the number of methyl groups available to skin cells can prevent these changes and ultimately, reduce the skin ageing process. Betaine is able to provide a source of methyl groups to cells and has a proven epigenetic impact.