Driclor type or Perspirex.
Showers every day and uses either a spray or stick at the moment, but noticeably smelly when comes home from school. I remember wearing an (illegal) t-shirt under my school shirt at secondary, always worried I'd be told off! Also had a spare to change into at lunch time as it would be soaked by then, remember sitting in lessons feeling the sweat running down my sides. My clothes were always damaged by sweat/deo stains and I'd have to change tops at least three times a day. Finding this stuff at uni was a game changer for me, but I can't see any age recommendations on it. Does that mean suitable for all ages?