Shampoo has existed for a really long time and there are many different kinds available today, from mass produced, jumbo sized synthetic cheapo bottles to its exact opposite.
Regardless of its many varieties, I know but 4 standard methods of head cleaning.
1. Shampoo only - usually done by those with uber short hair, this is the quickest way to clean your head. I've used this method when my hair is short, I'm feeling too lazy to condition or I've done a deep conditioning mask a day before hand.
2. Shampoo then conditioner - the most common way a girl washes her hair, as inundated by a ton of beauty products and ads. Unfortunately, it also takes way too long to clean my hair sine I'd have to do do a rinse for both shampoo and conditioner. I reserve this method for deeper hair cleaning sessions and dirtier surroundings such as after extensive labor.
3. Conditioner then shampoo (Reverse 'Poo) - not quite as common as the ones above and below it, I prefer this method since it cuts my shower time by at least 20%.
4. Condioner only (No 'Poo) - gained in popularity a couple of years ago, but not too much in hot, humid and polluted surroundings like Manila. I've tried this method a couple of years ago when I was on break and had to give up on Day 5, even without a heavy workload. It just doesn't feel as good or clean as using something with shampoo.
Which way is best?