Use less shampoo or shower gel
These are simply strong emulsifiers, which need water to work. It's the water which is making you clean, not the shampoo; the shampoo is simply making the water more attractive to grease. You'll find it goes a lot further if you use less and keep adding a splash of water while massaging it in until it's all washed off. Rinse and repeat? You wont need to.
(MrOli is ugly, but in the morning you will be sober, Sun 9 Jan 2011, 13:57, 6 replies, latest was 14 years ago)

Oh sod off
I like all the suds
(CactusZack Shaved his coin purse on, Sun 9 Jan 2011, 17:52, Reply)

Your mum likes all the suds.

(MrOli is ugly, but in the morning you will be sober, Mon 10 Jan 2011, 12:23, Reply)

surfactants
Basically, detergent which makes water and oil miscible.

Is tergant getting stuff dirty? "Now look, you've got my shirt all tergant"
( sandettie light vessel automatic New Twitter - @bollocksreally, Mon 10 Jan 2011, 8:19, Reply)

"Hey....
Tough stains proving hard to remove? Find you're scrubbing and scrubbing, but the stains won't shift? We have the answer!!

Why not try Sulphoclean. It's nothing but pure undiluted concentrated sulphuric acid and is guaranteed to remove tough grime in seconds - or your money back.

Warning: avoid contact with skin, foreskin & kin".
(The Archduke of South London I'm in your Girlfriend eating her organs, Mon 10 Jan 2011, 8:55, Reply)

I like the warning
and would like to see an official warning triangle for that.
( sandettie light vessel automatic New Twitter - @bollocksreally, Mon 10 Jan 2011, 11:21, Reply)

^^^ This, plsplspls

(MrOli is ugly, but in the morning you will be sober, Mon 10 Jan 2011, 12:24, Reply)