Stem cells are unprogrammed cells that are able to self-renew and develop into tissue-specific cells. Having the power to repair and rejuvenate, they show great potential in regenerative medicine. These cells unfortunately do not live forever. They lose their ability and reduce in number gradually with time, allowing aging to take effect on all parts of our body. For instance our skin epidermis. It comprises several layers of skin cells. New cells that are generated at the basal layer are gradually being 'pushed' upwards, finally shedding off as dead cells. Epidermal or skin stem cells divide slowly to produce new cells, which replace the worn-out cells above. As we age, these stem cells start to work less efficiently, leading to a decline in skin health and appearance. This process is further accelerated with stress in our daily life. In an attempt to maintain our body's precious stem cells, D. Schmid and colleagues found promising results from the stem cell extract of an endangered Swiss apple - Uttwiler Spätlauber. | 
