I need to remove build up but without buying new conditoner or shampoo

Shiny Hair Rinse

This simple kitchen-cupboard recipe corrects the hair’s pH and removes residue from shampoo and other hair products, creating a healthy-looking shine and bringing out the natural highlights in your hair.

If you don’t want even the slightest lightening of color, omit the lemon juice and double the vinegar.

Juice from ½ lemon
2 tablespoons apple cider vinegar
1 cup water

To make:
1. Combine all ingredients in a pitcher or jar and mix well.

To use:
1. Shampoo and rinse hair as usual.

2. Pour the mixture on your hair and massage into the scalp and through the hair.

3. Rinse thoroughly with cool water.

http://www.care2.com/greenliving/shiny-hair-rinse.html

BTW, whenever you have some extra cash, Neutrogena Anti-Residue Shampoo = the best clarifying shampoo. It's a drugstore bargain.

rinse it with a mix of water and vinegar if your hair is dark if your blonde however u can mix lemon juice with water and rince ur hair with that