Hair has a growth cycle, anagen, regression, and resting phases. Hair removal creams use chemicals to dissolve the hair structure and make the hair in the anagen phase visible to the naked eye fall out. But it has no effect on the resting hair follicles, which grow new hairs soon after a week or so. The main component of these chemicals is mercaptoacetic acid, which is irritating to the skin and can cause a local rash and itching in people with sensitive bodies. Frequent use of hair removal creams can also clog pores and can lead to inflammation of hair follicles, keratinization and roughness, and hyperpigmentation in severe cases. Hair removal creams should also not be used during pregnancy and try not to be exposed to chemicals that can affect the healthy development of the baby. Given the chemical damage of hair removal creams and the fact that they cannot permanently remove hair, laser hair removal is still recommended for those who have a need for hair removal. Current lasers can target pigment absorption, causing the destruction of pigment-containing cells in the hair follicle without damaging the surrounding skin. Because hair has different growth cycles, laser is more destructive to hair follicles in the anagen phase and less destructive to hair follicles in the resting phase, so it should be done several times, at intervals of three months, to achieve good hair removal results.