[noun] [U] - a liquid or powder used to clean or to remove colourMy grandmother doesn't think a toilet has been properly cleaned unless it's had half a bottle of bleach poured down it.Do you think Lucy puts bleach on her hair (= uses bleach to make it lighter in colour)?
BLEACH
Meaning of BLEACH in English
Cambridge English vocab. Кембриджский английский словарь. 2012