New triple corrective anti-imperfection care for oily, acne-prone skin, with the power of microbiome science, correcting dark spots and post-acne scars. Against relapse. With proven effectiveness in 8 hours. Effaclar Duo+M by La Roche-Posay is a triple corrective care for oily, acne-prone skin: blackheads, blemishes and post-acne scars. Even in serious cases. Tested on all photo types. New scientific discovery: in the skin microbiome, the bacteria that cause acne blemishes are made up of subtypes, called phylotypes.