Does "staple" have the same meaning as "product"?
Native speaker’s answer
Rebecca
"Staple" is being used here to show that the product, in this case, lipstick, is an important or vital part of something. Here it is being used to emphasize that "red lipstick" is a vital part of modern-day beauty. So in this situation, you cannot replace "staple" with "product" as it does not carry the same tone and would change the emphasis of the sentence. Ex: Fish is a staple in my diet. Ex: Fish is a product in my diet.