Use of chamomile gel (Matricaria chamomilla l.) associated with low frequency red LED in the treatment of vulgar acne. Research, Society and Development, [S. l.], v. 10, n. 15, p. e162101522627, 2021. DOI: 10.33448/rsd-v10i15.22627. Disponível em: https://rsdjournal.org/rsd/article/view/22627. Acesso em: 5 dec. 2025.