The combination of shampoo and hair conditioner in one bottle. Also known as a 2-in-1.
I used to buy shampoo and conditoner separately, but now I buy shamditioner.

This new shamditioner makes my hair clean and soft!
by skyclad580 February 03, 2010
A mixture of shampoo and conditioner.
In order to saze time, I used shamditioner in the shower.
by WaffleCohn May 12, 2011

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