There are white particles in the hair, mainly depending on the number of particles, if the particles are more, it is possible that the eggs. Usually the eggs of head lice, because head lice is a susceptible parasite, oviposition is usually attached to the root of the hair, so it is necessary to shave the hair and timely treatment with anti-parasitic drugs. Usually you can use a decoction of the Chinese herb Baibei to wash it externally. If the white particles are very small, it may also be caused by seborrheic dermatitis. It needs to be treated with oral antihistamines.