Several treatments help with acne, ranging from drugstore products that clear mild breakouts to prescription options that tackle deeper, hormonal, or severe cases. What works best depends on the type of acne you’re dealing with, how long you’ve had it, and whether it’s driven by clogged pores, bacteria, inflammation, or hormones. Here’s a practical breakdown of the most effective options.
Over-the-Counter Basics: Salicylic Acid and Benzoyl Peroxide
These two ingredients are the workhorses of acne treatment, but they do different things. Salicylic acid (usually at 2%) dissolves the oil and dead skin cells that plug pores, making it especially good at clearing blackheads and whiteheads. Benzoyl peroxide (available at 2.5% to 10%) kills acne-causing bacteria on the skin’s surface and inside pores.
A clinical crossover study of 30 patients found that only the salicylic acid group had a significant reduction in clogged pores (comedones). Patients who started with benzoyl peroxide and then switched to salicylic acid continued to improve, while those who started with salicylic acid and switched to benzoyl peroxide actually worsened. This suggests that for non-inflamed, clogged-pore acne, salicylic acid is the better starting point. For red, inflamed pimples with visible bacteria-driven infection, benzoyl peroxide is more useful.
A practical approach: use a salicylic acid cleanser daily for blackheads and whiteheads, and add a thin layer of benzoyl peroxide (start at 2.5% to minimize irritation) on inflamed spots. You can use both, but applying them at separate times of day reduces dryness.
Retinoids: The Gold Standard for Persistent Acne
Retinoids, which are vitamin A derivatives, speed up skin cell turnover so dead cells shed before they can clog pores. They also reduce inflammation and help other treatments penetrate more effectively. Over-the-counter retinol is the mildest option, while prescription-strength versions are significantly more potent.
Among prescription retinoids, clinical trials show that tretinoin 0.05% gel has greater acne-clearing power than adapalene 0.1% gel, but it also causes more redness, peeling, and dryness. Adapalene (now available over the counter as Differin) is better tolerated and a good entry point if you’ve never used a retinoid. Either way, expect four to six weeks of adjustment where your skin may look worse before it improves. Apply a pea-sized amount at night, and always use sunscreen during the day since retinoids make skin more sensitive to UV.
Hormonal Treatments for Adult Women
If your breakouts cluster along the jawline and chin, flare around your period, or started (or worsened) in your twenties or thirties, hormones are likely involved. Two prescription approaches target this directly.
Spironolactone
Spironolactone blocks the effects of androgens, the hormones that ramp up oil production. It’s used off-label for acne in adult women and has strong evidence behind it. A large double-blind trial of 410 women found significant improvements in both acne severity and quality of life, with the odds of treatment success more than five times higher than placebo at 12 weeks. A long-term retrospective study spanning nearly 300 patient-years of treatment found that 86% of patients experienced clinical improvement. In a head-to-head comparison, spironolactone combined with benzoyl peroxide outperformed the common antibiotic doxycycline combined with benzoyl peroxide at both four and six months.
Combined Oral Contraceptives
Birth control pills containing both estrogen and a progestin lower the androgens circulating in your blood. A Cochrane review of 31 trials covering over 12,500 participants confirmed that these pills significantly reduce both inflammatory and non-inflammatory lesions. Formulations containing drospirenone performed particularly well: one trial found a four-fold higher chance of achieving clear or almost clear skin versus placebo after six cycles, and another showed a 66.8% reduction in total lesion count. Results typically take two to three cycles to become noticeable.
Blue Light Therapy
Acne bacteria naturally produce a compound called porphyrin. When exposed to blue light at around 420 nanometers, porphyrin generates free radicals that destroy the bacteria from the inside. This makes blue light therapy a non-chemical option for mild to moderate inflammatory acne.
In a clinical study, patients using an at-home blue light device saw a 41% reduction in inflamed bumps by day 28 and a 50% reduction in blackheads over the same period. One patient’s total lesion count dropped by 94% after eight weeks of consistent use. Results vary, but the treatment is well tolerated with virtually no side effects. Blue light doesn’t address clogged pores or hormonal drivers on its own, so it works best alongside other treatments.
Isotretinoin for Severe or Resistant Acne
Isotretinoin (originally sold as Accutane) is the most powerful acne treatment available. It shrinks oil glands, reduces bacteria, decreases inflammation, and normalizes how skin cells shed. It’s typically reserved for severe, cystic, or scarring acne that hasn’t responded to other treatments.
A standard course runs four to six months, with the dose adjusted by body weight. For a person weighing about 130 pounds (60 kg), the total cumulative dose over the full course is roughly 7,200 to 9,000 mg. Lower daily doses of 10 to 20 mg have been shown to achieve similar long-term results with fewer side effects, though treatment takes longer. Common side effects include very dry skin and lips, dry eyes, joint aches, and sensitivity to sunlight. Your doctor will monitor blood work throughout the course, checking liver function, cholesterol, and other markers at regular intervals. Most people who complete a full course see their acne resolve permanently, though a smaller number need a second round.
Diet and Lifestyle Factors
Diet doesn’t cause acne on its own, but it can make breakouts worse. The strongest evidence links high-glycemic foods, those that spike blood sugar quickly like white bread, sugary drinks, pastries, and white rice, to increased acne severity. These foods trigger a cascade of insulin and other hormones that boost oil production and skin cell growth. Randomized controlled trials have confirmed this connection. Swapping high-glycemic carbs for whole grains, vegetables, and protein-rich foods is a reasonable, low-risk strategy.
The evidence on dairy is less clear-cut. Some studies show a link between milk consumption and acne, particularly in populations eating a Western diet, but the effect appears to depend on sex, ethnicity, and overall dietary patterns. If you suspect dairy is a trigger for you, a two- to three-month elimination trial is a simple way to test it.
Building a Routine for Acne-Prone Skin
Using the right active ingredients matters, but so does everything else you put on your face. Products labeled “non-comedogenic” are formulated to avoid clogging pores. Key non-comedogenic ingredients to look for in moisturizers and sunscreens include glycerin, hyaluronic acid, niacinamide, dimethicone, and aloe vera. Ingredients to avoid include coconut oil, cocoa butter, lanolin, and wheat germ oil, all of which are known to block pores.
A solid morning routine for acne-prone skin: gentle cleanser, non-comedogenic moisturizer, non-comedogenic sunscreen. In the evening: cleanser to remove oil and sunscreen, one active treatment (retinoid, benzoyl peroxide, or salicylic acid), then moisturizer. The key word is “one.” Layering multiple actives at once causes irritation without improving results. If you wear makeup, mineral-based or non-comedogenic formulas are less likely to cause breakouts.
Treating Dark Spots After Acne Clears
Even after a pimple heals, it can leave a dark or reddish mark called post-inflammatory hyperpigmentation. This isn’t scarring. It’s excess pigment deposited during the healing process, and it fades on its own over months, but several ingredients speed that up considerably.
Vitamin C (L-ascorbic acid) works by interfering with the enzyme that produces pigment, lightening dark spots over time. Niacinamide takes a different approach: it blocks the transfer of pigment to skin cells, gradually evening out skin tone without irritation. Azelaic acid is a standout because it treats active acne and fades dark marks simultaneously by inhibiting the same pigment-producing enzyme. Other effective options include kojic acid, arbutin, and licorice extract. Any of these can be layered into your existing routine, applied directly to dark spots after cleansing and before moisturizing.