“The frequency of deep conditioning depends on the health of the hair,” Armand says. But those with damaged hair need to increase their deep conditioning sessions to more than once a month. “Healthy hair requires monthly maintenance versus damaged hair which requires, at minimum, two deep conditions a month. When hair is damaged, dry, brittle, and lacks elasticity (curls don’t pop or snap back), it requires more attention and multiple cycles of conditioning to create moisture retention, elasticity, and restore vital proteins and nutrients,” he adds.