what is sealant, is it necessary?

a sealant is more of a man made coating, instead of using a natural wax element, they use chemicals...

it does the same thing - protect your paint.

the positives of a sealant are that they can last longer, and seem to be generally harder wearing, plus can 'sheet' the water better from the car.

there are also semi and fully ceramic sealants which can last years...

so it's all really down to preference... if you don't really like washing and waxing, but want to protect your paint, use a sealant..l

if you like the waxing stage, like the beading etc... use a wax...

if you are greedy, use both! lol