Khovanskii's theory applies for non spiralating leaves of real analytic foliations as was shown in a joint work with R. Moussu. This theory proves that these leaves behave much like subanalytic subsets at least for the finiteness properties. Here it is shown that Kurdyka-Raby's technique can be applied to prove the existence of densities in each boundary point of a non spiralating leaf. This result doesn't use regularity assumptions on the boundary set of a very few results are known on these sets.