The manufacturing process is easiest to understand if it is viewed as three separate steps: melting and mixing the lipstick; pouring the mixture into the tube; and packaging the product for sale. Since the lipstick mass can be mixed and stored for later use, mixing does not have to happen at the same time as pouring. Once the lipstick is in the tube, packaging for retail sale is highly variable, depending on how the product is to be marketed.
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