Question

what is harmful effect of deodorants

Answer 1

 Antiperspirants address this problem using antimicrobial agents to kill bacteria and other ingredients such as aluminum that block your sweat glands. However, separate research has revealed antiperspirants affect the bacterial balance in your armpits, leading to an even more foul-smelling sweat problem.

Answer 2

Harmful effects of deodrants r :

Breast cancer risk with deodrants.
The active aluminium based ingredient in deodrants temporarily plugs the sweat glands and that's how it prevents u from perspiring.

Hope this will help u!!