Stem cells, however, age over time and lose their stem cell potential. As a consequence, skin rejuvenation, epidermal homeostasis and tissue regeneration is diminished, eventually resulting in intrinsic skin ageing. Stem cell ageing is further accelerated by extrinsic factors such as air pollution, daily sunlight, and ozone. Thus, damage of stem cells is a predominant factor that leads to accelerated skin ageing.
RAHN has screened two cosmetic actives, DEFENSIL® and CELLIGENT®, for their stem cell protecting properties and have observed impressive results for both.