TWO SENTENCES!!! What is something that you have used today that was designed by an engineer? What parts were designed by an engineer?

Deodorant. (istg i did)

Deodorants are typically manufactured in a batch process within high shear mixers that have a volume capacity approaching 2,000 L – the formulation and combination of ingredients really depends on what form the product is going to be delivered to the consumer.

Solvents or silicones are mixed with the powder ingredients such as cetyl alcohol into the oil phase within the mixer. The active ingredient is prepared separately in an aqueous, dispersed phase.

Both the oil phase and dispersed phase are combined and this forms an emulsion. If the end product is a delivered as a stick or roll-on, then gelling agents or polymers are added. Otherwise, perfume/fragrance is the next ingredient before the product is cooled and then poured into containers to be packaged.

The active ingredients in deodorant differ from that of antiperspirants because of the different ways they inhibit odour. Aluminium based compounds are usually the active ingredients for antiperspirants, with aluminum zirconium tetrachlorohydrex glycine being the most commonly used.

Batch testing the products for safety and efficacy is an important part of the process, as products often land on our shelves with labels that state such things as ’48 hour protection’ or ‘contains aloe vera’. Manufacturers need to make sure that their products are safe, functional and contain exactly what it says on the container.

Explanation:

if you tell me the reason why i will tell you how to kiss passionately