The present invention relates to a method for the cosmetic (non-therapeutic) treatment of oily skin, including the steps: a) exposing the oily skin to a first quasi-monochromatic light of artificial origin having a dominant wavelength peak between 300 and 700 nm, better still between 400 and 600 nm, even better still between 560 and 620 nm, and in particular of around 590 nm, and b) applying to the oily skin a cosmetic composition comprising at least 1% by weight of hollow particles and preferably from 2% to 6% by weight of hollow particles, relative to the total weight of said composition, the hollow particles being hydrophobic silica aerogel particles.