Kiehl's Age Defender Power Serum is a potent men's anti-ageing treatment designed to strengthen and visibly lift skin. This powerhouse anti-wrinkle treatment provides a first line of defense against the visible effects of ageing. Use twice daily to banish wrinkles, firm sagging and increase skin's resilience ' thanks to the hard work of cypress extract, adenosine and a custom strengthening protein blend. This lightweight formula absorbs rapidly and operates seamlessly for an age-defying skin finish.