Ruby, you really mean baking soda? Normally this is for the cake.
I have heard that some girls take for peeling some sorts of acid, but I never heard of baking soda.
I think you mean baking powder Pheasant
As a cleaning agent
A paste from baking soda can be very effective when used in cleaning and scrubbing.
For cleaning of aluminium objects it is to be discouraged as it attacks the thin unreactive protective oxide layer of this otherwise very reactive metal.
A solution in warm water will remove the tarnish from silver when the silver is in contact with a piece of aluminium foil.
Has been used for many years informally as a tooth whitening agents.
Is more effective than vinegar, salt, or hot water alone in removing pesticides from vegetables.