thanks for this reply and yes herbal shampoo suits me better.. can you recommend me any herbal anti dandruff shampoo?
Shampoos of different companies may contain some common ingredients, eg cleansing agent, surfactant etc. (SLS- sodium lauryl sulfate may also used). You may be allergic to such ingredients, specially due to aroma (smell) of it you may be facing problem of headache. Try completely herbal origin shampoo or try kid's shampoo (johnson product). Hope it will suit to you.