And a retinoid, which we’ve touched on before, is beneficial for exfoliating the skin and purging your pores of dirt and oil, which is why Zeichner says they’re helpful for cysts, too. He recommends Differin, the only prescription-strength retinoid that’s available over the counter, and which many derms here have suggested to us before for acne-prone skin. He says you can use a pea-size amount and start applying it every other night as your skin gets adjusted to it (or combine it with benzoyl peroxide and salicylic acid for a stronger mixture).
There are two big guns used to take down acne, and they're both great at doing entirely different things. Salicylic acid is a beta hydroxy acid that comes from willow bark and works primarily as an exfoliator, breaking down fatty acids like sebum so your pores don’t clog. (Glycolic acid works similarly but is less effective.) These acids are effective on comedones — whiteheads, blackheads, and other non-red bumps.
For an overnight solution or something that covers a larger surface area (rather than a smaller spot-treatment), Zeichner also recommends Neutrogena’s rapid-clear leave-on mask. The idea is that you spread benzoyl peroxide all over your face, but it’s not a wash-off mask, so you’re getting a prolonged exposure to the antibacterial peroxide. He says it’s helpful for treating the pimples you have and preventing new ones from popping up.
ungrouped: Paronychia Acute Chronic Chevron nail Congenital onychodysplasia of the index fingers Green nails Half and half nails Hangnail Hapalonychia Hook nail Ingrown nail Lichen planus of the nails Longitudinal erythronychia Malalignment of the nail plate Median nail dystrophy Mees' lines Melanonychia Muehrcke's lines Nail–patella syndrome Onychoatrophy Onycholysis Onychomadesis Onychomatricoma Onychomycosis Onychophosis Onychoptosis defluvium Onychorrhexis Onychoschizia Platonychia Pincer nails Plummer's nail Psoriatic nails Pterygium inversum unguis Pterygium unguis Purpura of the nail bed Racquet nail Red lunulae Shell nail syndrome Splinter hemorrhage Spotted lunulae Staining of the nail plate Stippled nails Subungual hematoma Terry's nails Twenty-nail dystrophy