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shortdub78 no worries dear, it will be alright. I think I was able to figure it out once you listed your products. Your hair needs hydration, that is why it seized up in the shower, trying to hold on to the water. Do you have any glycerine, honey or curl activator products?
Everything you have done is good, now just put a product with lots or glycerine like carefree curl activator, and spitz with something like S-curl. Seal that with some EVOO. Do not detangle, just smooth you hair into a bun with the curl activator gel, and baggy overnight. You can rinse and reapply daily, so your hair is clean. Finger Test the hair to see how many tangles have come out. You can steam if you have one. After some of the tangles fall out easily, Mix raw honey and a little water into a mask pre poo on top of everything (no heat) leave it for three hours, finger detangle, plait, then wash in the plaits. Then you should be able to use your regular routine. Raw honey will remove build up if used without heat for three hours, and it is a humectant.
Try adding this curl baggy every one in a while for moisture, you just have to wear a bun that day. Be patient with you hair and listen to it.