Yes. It exfoliates your skin. So it removes the dead skin from your face and helps dark spots fade more quickly. If your on The Regimen, don't start using it till your skin is used to BP.

it helps unclog pores(to a certain extent depending on the % and frequency of use) and also helps remove the upper layer of dead cells.

so the epidermal layers shift and swap faster thus 'fastening' the lightening process.

it doesnt have the typically lightening mechanism as such.