Either Apply to wet clean car or with a damp cloth on the dry, clean car. Large surfaces rub in peace with the seal, black plastic parts avoiding possible! These are, after drying possibly know! This film in turn can indeed be removed with a good plastic cleaner without problems - the extra work you can save but when one considers's.
Etc. Dried insects and tar splashes and remains of tree sap can be removed with the seal completely without trace, so they have not yet become one with the paint ...
A huge advantage is that you can, in contrast to many other polishes treat the entire car in one go without having to be afraid that you ruin the paint, because the product dries and then can no longer be removed. The product forms on drying a white veil, which you can then wipe with a soft cloth. Tip from me: let dry the whole car in peace (not necessarily in the blazing midday sun, warm but it can be quite), the longer the drying time, the easier it is the "dusting".
Opinions, the product was after drying themselves can not be removed with a polishing machine, I can neither understand nor confirm. My car was parked before overnight-applied Number One in the garage and was absolutely no problem to treat the next day to the end.
The durability of the seal: I do Number One usually twice a year, after and before winter. In between, if my dead insects on the vehicle front are too many, I remove this with the product, I have learned that the "Machine wash" the car wash does not manage.
From my Number One acrylic sealer gets an unqualified "Highly recommended"