We study coherent and non-coherent backscattering of circularly polarized light from turbid media. We find that the sign of helicity of circular polarized light does not change for a medium of point-like scatterers and can change significantly for the medium with high anisotropy of scatterers. The helicity flip is observed when the light scattering is described in terms of the Henyey-Greenstein scattering phase function. The angular dependence of the sum of coherent and non-coherent parts of backscattering also exhibits a helicity flip.© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.