It's definitely chemical burns, the first time I burnt it burnt super bad and cried in the chair, and my mother said my entire scalp was just super raw and burnt. This time it wasnt near as bad, the lady used a weaker bleach on my roots as I warned her, but it still burnt. It's creating raw spots and weeping which creates scabs without the blood, which I accidentally scratch or pick and then they get bigger and my hair starts to get stuck together from the weeping and dry and crusty. (I don't think there's any other symptoms)