  We calculate multicomponent stellar wind models with inclusion of a helium
component applicable to He-rich and He-poor stars. We show that helium does not
decouple from the stellar wind of He-rich stars due to its coupling to hydrogen
and its ionized state. For He-poor stars helium may decouple from the stellar
wind, however this effect is not able to explain the chemical peculiarity of
these stars. We conclude that the explanation of chemical peculiarity of these
stars based purely on helium or hydrogen decoupling from the stellar wind is
unlikely.
