Gugi you said it , if we look at everything we do ,or around or use nothing is good for us ,, but I wouldn't force you or consider telling you it's good for you ,, I just don't agree about using it on razors. I,m still here 62 years later and I,ve been around more stuff that ain't good for you than most of the population, worked in the oilfield 40 years, many chemicals and poisonous gas that will kill you with one breath , but everything from , spending too much time I. The sun to what toilet paper we use is harmful to us in some way according to the experts , I'd like to see the man who doesn't have something bad for their health around them ,, including the air we breath,, but enough of my soapbox , the original post , wd40 will not hurt your razoreven when it drys it has a layer of protection from moisture, now I use Balistrol, I use tuf stuff , and even gun grease , if we're going to say what "we " believe is the best I like rem oil better than any thing ,, So as you can see I,m not saying anything about wd40 as the best just that it is ok and it who not kill you unless you drink it by the glass full. Respectfully. Tc