Acne is one of the most common skin concerns that we see in our practice. Affecting nearly 85% of people at some point in their lives, while often associated with teenagers, acne is just as frustrating for adults, especially when breakouts are chronic or seemingly random. The key to treating acne effectively is understanding what’s behind it.
Despite what you may have heard, acne isn’t just caused by “dirty skin” or greasy foods. In reality, it’s a complex skin condition influenced by internal and external factors. Let’s break down the most common acne triggers so you can begin to understand what might be affecting your skin.
Hormonal Fluctuations
Hormones are one of the most powerful forces behind acne, especially during life stages like:
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Puberty
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Menstrual cycles
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Pregnancy
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Menopause
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Medical conditions like Polycystic Ovary Syndrome (PCOS)
Androgens, hormones like testosterone, stimulate the sebaceous (oil) glands in the skin. This excess oil can mix with dead skin cells and bacteria, leading to clogged pores and breakouts. Hormonal acne often appears around the lower cheeks, jawline, and chin.
What to watch for: Deep, painful cysts or breakouts that flare up around your period or during times of hormonal shifts.
Diet and Nutrition
While diet isn’t the root cause of acne for everyone, research increasingly supports that what you eat can influence your skin, particularly if you’re already acne-prone.
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High-glycemic foods like white bread, sugary snacks, and processed carbs may spike insulin levels and contribute to breakouts.
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Dairy products, especially skim milk, have been linked to acne in some studies due to hormones present in milk.
Tip: If you suspect your diet might be playing a role, try eliminating common triggers for 2–4 weeks and track any changes in your skin.
Stress and Emotional Triggers
Stress doesn’t directly cause acne, but it can definitely make it worse. When you’re stressed, your body produces more cortisol, a hormone that can increase oil production and inflammation.
Stress can also disrupt your sleep, weaken your immune system, and lead to habits like touching your face more often, all of which can aggravate acne.
Self-care matters: Meditation, sleep, movement, and even therapy can help reduce stress-related breakouts.
Clogged Pores and Skin Buildup
At the core of most acne lies a clogged pore. When oil (sebum), dead skin cells, and bacteria accumulate, the result can be:
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Blackheads (open comedones)
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Whiteheads (closed comedones)
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Papules, pustules, cysts (inflamed blemishes)
This buildup happens more easily if your skin’s natural exfoliation process is sluggish, something that can be improved with topical treatments and regular skincare.
Skincare and Makeup Products
Not all skincare is skin-friendly, especially for acne-prone individuals. Products that are too heavy, oily, or not labeled “non-comedogenic” can clog pores and contribute to breakouts.
What to avoid:
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Occlusive ingredients like mineral oil or lanolin
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Fragrances and alcohol in toners or moisturizers
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Layering too many products without knowing how they interact
If you’re wearing makeup daily, make sure you’re properly cleansing your skin each night, and check ingredient lists for potential pore-cloggers.
Putting It All Together
No two people experience acne in the same way, and what triggers breakouts for one person may not affect another. Understanding your own skin is a process that takes patience, consistency, and often some trial and error.
If you’re feeling overwhelmed or unsure where to start, a board-certified dermatologist can be an invaluable partner. They can help you identify the root causes of your acne, rule out underlying conditions, and create a personalized treatment plan tailored to your skin’s unique needs.
Whether you need prescription-strength products, professional procedures, medical-grade skincare, or simply help streamlining your routine, a dermatologist can guide you toward long-term, clear-skin success.
Keep Learning With Us
Follow us on Instagram and Facebook for more real-world skincare education, promotions, and expert advice. Whether it’s redness, acne, or chronic sensitivity, we’ve got the tools, treatments, and experience to help you feel good in your skin again. Acne doesn’t define you, and with the right support, clearer days are ahead. For more information on skin health and prevention tips, visit the American Academy of Dermatology (AAD).
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