Hi mama! Honestly, I'd check with your dermatologist or OB about this one kasi I'm not 100% sure kung may absorption sa bloodstream or if it affects milk supply, a few of us moms tried various treatments postpartum but none of us were confident about IPL specifically while breastfeeding, so better safe than sorry! Your doctor can give you the clearest answer based on kung anong type of IPL at gaano katagal ka pa breastfeeding.