Hydrocortisone is a widely-used steroid that reduces swelling and redness.
Niacinamide is a form of vitamin B₃ that encourages your cells to proliferate and absorb and neutralize free radicals.
Metronidazole treats redness and pimples by killing bacteria.
Oxymetazoline helps treat the redness and dilated blood capillaries (erythema) associated with rosacea.
Salicylic acid helps keep pores clear by encouraging cell-turnover from inside the hair follicle.
Sulfur helps unclog pores by absorbing oils and drying out dead cells on the surface of your skin.
Sulfacetamide stops pimple-causing bacteria from growing on the surface of the skin.
Oral doxycycline is an anti-inflammatory that stops bacteria growth contributing to rosacea.