This things called a physical object, a buyer touch, feel, try-out. Meaning a touch-and-feel. You have to house a warehouse somewhere to store these hair products, that temperature does not change their nature by how long the shelf time last.....1 year or you calculate 5 years?

The shelf-life means, how long this products does not have an expiration date.

For the correct creating that product, they have the preservative in it. Some product, like my bathroom, has an addictive free or preservative free hair shampoo from Japan. Those are from different company. They depends on their advertising on the bottle itself.

Here they advertise on 39. People going over the age soon in the 40 years bracket.

In the copy writing world, that is where each company finding their slogan to sell sell sell. Those are what you know of the selling pitches.

Before the Internet comes, those Steve jobs 2005....or Nescape comes, there is no other ways approaching the customer base.

So while the www age comes, for example, you start to pick up all the on-line language, whichever selling ideas, you got familiar, if your parents have a physical store, or inventory, they or their friends, their uncle, or aunts, or whom have a business, can just asking you for some ideas how to market their entire inventory behind, not all the business are switching to the online correct methods. They hear people say, they research on their own, they try out things to put out more name on their branding or logo....etc.

Most older age generation are not familiar with the on-line language, and therefore, if you become more techy....other than the PC games, you can get your skills much faster, and if you done it right, they will find you, not you finding them. My entire family have no one does those business....