I have recently started using dant kanti toothpaste from patanjali. It is really good. Dant kanti is made from natural and ayurvedic ingredients. It may have some chemicals but lesser than other toothpastes. It has a brownish colour paste inside and tastes like the dant manjans we used in childhood. It cleans the teeth very well and gives a good mouthfeel.
The price is a bit on the higher side as compared to other toothpaste giant and given that it is a relatively new brand.