Nor will Intercytex's technique do anything about that other bane of ageing, the tendency of hair to go grey.

ECONOMIST: A cure for baldness

The best known of these, having mounted an impressive viral marketing campaign, is Go Away Grey, manufactured by Rise-N-Shine LLC of New Jersey.

FORBES: A Pill To Prevent Gray Hair - Is It Finally On The Way?

The trade-offs and shades of grey that an entrepreneur must consider before deciding to go into business.

FORBES: Taking The High Road? Reformed Youth Turn To Entrepreneurship

Liberal Democrat AM Jenny Randerson argued that that the measure did not go far enough to enforce the rules as it lists exceptions which could create many grey areas.

BBC: Welsh Assembly