The specific etiology of Aphthous ulcers is unknown, but there are many risk factors that have been identified, such as, genetic pre‐disposition, stress, menstrual cycle, immune dysregulation, and deficiencies in hematinic factors such as zinc, iron, folic acid, and vitamin B.
it is suggested according to many studies that the denaturing effect of Sodium Lauryl Sulfate on the oral mucin layer may potentiate aphthous ulcers due to the exposure of the underlying oral epithelium. (Herlofson, et al. 1996) (Shim, et al. 2012)
To manage this condition: try to treat the predisposing factor. moreover, some palliative agents that can help in reducing pain, fastening the healing and lowering the discomfort can be used. Back to nature is new trend in medical condition, topical application of Aloe vera and olive oil proved their effectiveness in preventing chemotherapy induced oral mucositis, you can have a look on my last articles about that topic. Read thoroughly in the introduction and discussion, then you can know why it is beneficial to use them.
Article Efficacy of Aloe-Vera Use for Prevention of Chemotherapy-Ind...
Article Evaluation of the effectiveness of olive oil to prevent chem...