Lemon essential oil has many health benefits. It is harvested by cold-pressing lemon rind, not the inner pulpy fruit as most would assume. It is a natural detoxifier, astringent and disinfectant. Lemon essential oil has many skin care benefits because of these properties. It is also used to lighten skin and reduce the appearance of dark spots and blemishes. Its astringent properties make it useful for smoothing the texture of skin and opening the pores for better absorption of other skin care ingredients.