Hi Lone Walker, sounds like you have a residue build up. This happened to me. If you have hard water, the BS does not dissolve properly, slowly building up a residue. To avoid this happening again, if you have hard water, boil the water first to mix the BS into. Boil water in a pot, let it start to cool so that the minerals in the water will settle to the bottom of the pot, then slowly pour out the 5 cups (1.18 liters) needed for the 1/2 cup (.24 liter) of BS. You don't need to do this for the ACV, only the BS.
You could also purchase a large bottle of water, I buy water cooler size jugs and use that instead of boiling.
To remove the build up you now have, purchase some Neutrogena Anti Residue Shampoo, only a small bottle is needed. Rub this on your wet sections and let it sit for awhile, then rinse out well, you will see the water a gray color. Try not to get it on your scalp if possible, for some it makes the scalp dry and itchy. You will notice a difference right away. Neutrogena should only be used 3-4 times a year, so only use this when really needed. After you rinse it out well, soak your hair in the tub for awhile to make sure it is all out, let your sections swim in the tub water.
When this first happened to me, I thought wow, my hair is so tight and is maturing qickly,,,ha ha ha,,,was I wrong....peace