Strong, be careful on certain plastics...definitely NOT FOR CLEAR BRAS.
I use this in conjunction with Iron X on my wheels before I seal them. I used it before on my body panels but it is too harsh and may discolor sensitive plastic bits. I found that out the hard way when I sprayed my external trunk switch...the rubber started to dissolve immediately and I ordered a new trunk switch for my 335i Convertible.
Rating: 3 stars