Take this from a person who has made their share of writing boo-boos. I rarely have a perfect first draft of anything I write. I have learned (painfully) to carefully go over what I write and almost invariably discover something that would be embarrassing to publish. This is especially critical when writing advertising copy destined be read by great multitudes.
Today I came across this example:
“Over time, this can add to unwanted weight gain that you do not want.”
A good, solid edit would have discovered this and restructured it. Unwanted mistakes like this are something you do not want.