It has a chance of making you last longer in life terms depending if the other person has stds or not. if so then it does make you last longer.
Use synthetic oil
don't use so much
Keep drilling for more oil.
If you have stronger soap, your bubbles will last longer.
don't use so much
Yes it can last longer
Wearing primer will help your makeup last longer also washing your face every morning and night because a fresh face will always last longer (take it from me). Also to make your foundation last longer you could wear power. For eyelashes you could apply a clear coat as a primer then but your normal mascara on. :)
If you want any batteries to last longer then put the batteries in your fridge and that helps them to last longer!!
To make potions last longer, you add redstone to them.
Milk is pasteurized which reduces the microbial load. That makes it last longer.
sleep longer or try to stay asleep longer