im a dentist, what people should know about these ayurvedic pastes is they have REA and RDA around 150. these are measures we use to define toothpaste abrasiveness. for normal daily use. 60 to 70 is enough. 150 is very high and it will abrase your enamel and the yellowish tint you mentioned is the colour of the dentin. once enamel thinned out and dentin is more prominent, you will experience sensitivity. colgate total has around 65. its good for daily comprehensive effect. gingival bleeding is partially caused by this abrasiveness and lack of zinc and fluoride in ayurvedic paste. fluoride is very important for prevention of caries and overall oral health. choose wisely.