The band's founder helped to develop the luxury product, called GeneU, which claims to be one of the most advanced anti-ageing serums in the world, reported Femalefirst.
"'My DNA tests showed my skin degrades collagen rapidly, but that I have fairly good antioxidant protection. How well does it work? You have to be realistic and objective.
"You'll never get a product that will give you the skin of a teenager 40 years on. However, I found particularly underneath the eyes, the finer lines have been reduced. I don't look as tired first thing in the morning. I can honestly say my skin is smoother than it was. I completely believe in the product and the technology and if you can afford this, it's amazing," he said.