The phrase "negligible amount" means a very small or insignificant quantity, so small that it can be ignored or doesn't make a significant difference. Full definition
As far as organic creams are concerned, they are formulated with natural ingredients and contain negligible amount of chemicals. (stylecraze.com)
While the contact lenses themselves are made out of a nearly negligible amount of plastic, the disposable containers that they are delivered in consist of a significant amount of packaging. (treehugger.com)
While it's true that brown rice contains more nutrients, they arrive in such negligible amounts that they're not worth considering. (blog.fitplanapp.com)