According to experts, excessing showering does plenty of damage to the skin and hinders the body’s ability to heal itself. Hot water and soap normally dissolve the lipids on your skin, and scrubbing only hastens this process.
You are advised to avoid lathering your whole body while showering, and only concentrate on the areas that give off the strongest and pungent smells.
This is what experts recommend, but as human beings we are used to showering at least twice a day, so, the best answer to this question would be, yes, too much is harmful but use the advice given above and do not do too much lathering as this is what causes you harm.