Struggling with acne? Learn about 10 common triggers—diet, hormones, stress, and skincare habits—and how to fix them for clearer skin.
Acne can be frustrating, unpredictable, and sometimes downright stubborn. If you’re wondering why you’re breaking out—even when using the right skincare products—there may be underlying causes you haven’t considered. Let’s explore 10 common acne triggers and how to address them for clearer skin.
If you’re struggling with persistent acne, schedule an appointment with
St. Louis Dermatology & Cosmetic Surgery today for expert skin treatments and care!

1. Hormonal Fluctuations
Why It Happens:
Hormones, especially androgens (like testosterone), stimulate oil production, leading to clogged pores and breakouts. This is why acne is common during puberty, menstruation, pregnancy, and menopause.
How to Fix It:
- Use hormone-friendly skincare with salicylic acid or benzoyl peroxide.
- Consider talking to a dermatologist about hormonal treatments like birth control or spironolactone (American Academy of Dermatology).
- Reduce dairy intake, as some studies suggest it may contribute to hormonal breakouts.
2. Stress & Cortisol Spikes
Why It Happens:
When you’re stressed, your body produces cortisol, which increases oil production and inflammation—both of which can trigger breakouts.
How to Fix It:
- Practice stress management techniques, like meditation, exercise, and quality sleep.
- Incorporate anti-inflammatory foods like green tea and omega-3s into your diet.
- Use soothing skincare with ingredients like niacinamide and centella asiatica.
3. Poor Diet Choices
Why It Happens:
High-glycemic foods (like white bread, sugar, and processed snacks) can spike insulin levels, triggering increased oil production and inflammation.
How to Fix It:
- Reduce refined carbs and sugar, opting for whole grains, fruits, and vegetables.
- Increase intake of zinc-rich foods (nuts, seeds, and beans), which support skin healing.
- Consider an elimination diet to see if specific foods trigger your breakouts (National Library of Medicine).
4. Overwashing & Harsh Skincare
Why It Happens:
Stripping your skin of its natural oils with harsh cleansers or excessive washing can trigger more oil production.
How to Fix It:
- Use a gentle, pH-balanced cleanser twice a day.
- Avoid alcohol-based toners and harsh scrubs.
- Apply a lightweight, non-comedogenic moisturizer to keep skin hydrated.
5. Dirty Pillowcases & Phone Screens
Why It Happens:
Your pillowcase and phone collect bacteria, oil, and product residue, which can transfer to your skin and clog pores.
How to Fix It:
- Change your pillowcase at least twice a week.
- Wipe your phone screen daily with an alcohol-based cleaner.
- Sleep with clean hair and avoid touching your face throughout the day.


6. Not Drinking Enough Water
Why It Happens:
Dehydration can lead to dull skin, slower healing, and excess oil production as your skin compensates.
How to Fix It:
- Drink at least eight glasses of water daily.
- Eat water-rich foods like cucumber, watermelon, and celery.
- Use a hydrating serum with hyaluronic acid to lock in moisture.
7. Not Washing After Exercise
Why It Happens:
Sweat mixed with bacteria and oil can clog pores if left on the skin too long.
How to Fix It:
- Wash your face immediately after workouts with a mild cleanser.
- Use salicylic acid wipes if you can’t shower right away.
- Wear breathable workout fabrics to prevent body acne.
8. Medications & Supplements
Why It Happens:
Certain medications, like steroids, birth control, or biotin supplements, can trigger breakouts.
How to Fix It:
- Check with your doctor if your medications may be causing acne.
- If taking biotin for hair growth, balance it with zinc, which can counteract its acne-triggering effects.
- Consider switching to acne-friendly medicines if possible.
9. Clogged Pores from Makeup & Skincare
Why It Happens:
Some makeup and skincare products contain comedogenic ingredients that can trap oil and bacteria.
How to Fix It:
- Choose oil-free, non-comedogenic makeup and skincare products.
- Remove makeup before bed with a gentle micellar water or oil cleanser.
- Clean your makeup brushes weekly to prevent bacteria buildup.
10. Genetics & Family History
Why It Happens:
If your parents had acne, you may have a genetic predisposition to breakouts due to overactive oil glands or slower skin cell turnover.
How to Fix It:
- While you can’t change genetics, you can control triggers with the right skincare routine.
- Consider professional treatments like chemical peels or laser therapy for stubborn acne.
- See a dermatologist for prescription options if over-the-counter treatments aren’t enough.
Clearer Skin Starts with Small Changes
Acne is complex and can be influenced by multiple factors. The good news? Identifying and addressing your specific triggers can significantly affect your skin health. By making minor adjustments—changing your diet, improving your skincare routine, or managing stress—you can reduce breakouts and improve your skin’s overall appearance.
Ready to Take Control of Your Skin?
If you’re struggling with persistent acne, schedule an appointment with
St. Louis Dermatology & Cosmetic Surgery today for expert skin treatments and care!
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