Humidity and air-conditioning can play havoc with straightened hair, according to Kao Corp's John Frieda.(Brief Article)

Cosmetics International, July, 2005

HUMIDITY AND air-conditioning can play havoc with straightened hair, according to Kao Corp's John Frieda. That is why is has added Simply Sleek to its Brilliant Brunette hair care line. Dark hair tends to absorb rather than reflect light, meaning it can look dull, the company says. When applied to wet hair, Simply Sleek straightening balm promises to smooth the hair and make it shiny.

It retails at 4.49 [pounds sterling].