Acne is one of the most common skin concerns worldwide, affecting teenagers, adults, and even babies. Yet despite how common it is, acne remains widely misunderstood.
Many people believe acne is simply caused by poor hygiene or eating the wrong foods. In reality, acne is a complex skin condition that’s influenced by multiple factors, including hormones, genetics, inflammation, lifestyle, and skincare habits.
Understanding what causes acne is the first step toward finding an effective treatment plan and achieving healthier, clearer skin.
What Is Acne?
Acne occurs when hair follicles and pores become clogged with excess oil (sebum), dead skin cells, and bacteria. This blockage can lead to various types of blemishes, including:
-
Blackheads
-
Whiteheads
-
Papules
-
Pustules
-
Nodules
-
Cysts
While acne most commonly appears on the face, it can also develop on the chest, back, shoulders, and neck.
The Main Causes of Acne
1. Excess Oil Production
Your skin naturally produces sebum to keep itself hydrated and protected. However, when the sebaceous glands produce too much oil, pores can become blocked.
Excess sebum creates an environment where acne-causing bacteria can thrive, increasing the likelihood of breakouts.
Oil production is often influenced by hormones, genetics, and stress levels.
2. Hormonal Changes
Hormones are one of the most significant drivers of acne.
Androgens, a group of hormones present in both men and women, can stimulate oil glands to produce more sebum. This is why acne frequently develops during:
-
Puberty
-
Menstrual cycles
-
Pregnancy
-
Perimenopause and menopause
-
Hormonal conditions such as PMOS (formerly PCOS)
Hormonal acne often appears along the jawline, chin, and lower face and can persist well into adulthood.
3. Clogged Pores
As skin naturally renews itself, dead skin cells are shed from the surface.
When these cells fail to shed properly, they can mix with excess oil and become trapped inside pores. This blockage forms the foundation of many acne lesions.
Exfoliating regularly and an appropriate, tailored skincare routine can help support healthy skin cell turnover.
4. Acne-Causing Bacteria
A naturally occurring bacteria known as Cutibacterium acnes lives on everyone's skin.
When pores become clogged, this bacteria can multiply within the follicle, triggering inflammation and leading to red, swollen spots and pustules.
It's important to understand that acne is not caused by "dirty skin." Over-cleansing or using harsh products can actually worsen irritation and compromise the skin barrier.
5. Inflammation
Inflammation plays a central role in acne development.
Even before a visible spot appears, inflammatory processes may already be occurring beneath the skin's surface.
This explains why some blemishes become painful, swollen, and difficult to treat.
Reducing inflammation is often a key component of effective acne management.
Does Diet Cause Acne?
The relationship between diet and acne is still being researched.
However, current evidence suggests that certain foods may contribute to acne breakouts in some individuals, including:
-
High-glycaemic foods and sugary snacks
-
Highly processed foods
-
Excessive dairy consumption in susceptible individuals
-
Eggs
-
Gluten consumption in individuals who are gluten intolerant, allergic to gluten, or have coeliac disease
However, diet along is rarely the sole cause of acne.
What triggers breakouts for one person may have little or no effect on another, which is why a personalised approach is often the most effective.
Can Stress Cause Acne?
While stress does not directly cause acne, but it can make existing acne worse.
When stress levels rise, the body releases hormones such as cortisol, which can increase oil production and inflammation.
Many people notice flare-ups during periods of:
-
Work pressure
-
Exams
-
Poor sleep
-
Major life events
Managing stress can be an important part of maintaining overall skin health.
Many people find that when stress rises, other areas of life such as sleep, diet and exercise begin to suffer, which can exacerbate acne.
Can Lack of Sleep Cause Acne?
While poor sleep alone doesn't directly cause acne, it can contribute to the factors that trigger breakouts. During sleep, the body undergoes important repair processes that help regulate inflammation, hormone levels, and overall skin health.
When you don't get enough quality sleep, stress hormones such as cortisol can increase. Elevated cortisol levels may stimulate oil production and promote inflammation, both of which are associated with acne development. Sleep deprivation can also impair the skin's natural barrier function, making it more vulnerable to irritation and slower to recover from existing blemishes.
Although improving your sleep alone may not eliminate acne, consistently getting 7-9 hours of quality sleep each night can support healthier skin and may help reduce the frequency and severity of breakouts as part of a comprehensive acne management routine.
The Role of Genetics
If acne runs in your family, you may be more likely to experience it yourself.
Genetics can influence:
-
Oil production
-
Hormonal sensitivity
-
Skin inflammation
-
Pore size and structure
While genetics cannot be changed, understanding your predisposition can help guide treatment choices and skincare strategies.
Common Acne Myths
Myth: Acne Is Caused by Dirty Skin
Acne is not the result of poor hygiene.
In fact, excessive cleansing can strip the skin barrier and worsen irritation.
Myth: Only Teenagers Get Acne
Adult acne is increasingly common, particularly among women.
Many people experience breakouts well into their 30s, 40s, and beyond.
Myth: Sun Exposure Clears Acne
While sunlight may temporarily reduce the appearance of blemishes, UV exposure can increase inflammation, pigmentation, and long-term skin damage.
Why Understanding the Cause Matters
Not all acne is the same.
The underlying cause of your breakouts may determine which ingredients, treatments, and skincare routines are most likely to help.
For example:
-
Hormonal acne often requires a different approach than congestion-related acne.
-
Sensitive, inflamed acne may benefit from barrier-supportive ingredients.
-
Persistent adult acne may require targeted active ingredients and professional guidance.
This is why identifying the root cause is often more effective than simply treating visible spots.
A Science-Led Approach to Acne Care
At Bragan Skincare, we believe effective acne management starts with understanding the skin rather than fighting against it.
Acne is a multifactorial condition, and there is rarely a single cause or overnight solution. Instead, successful treatment typically involves a consistent routine, evidence-based ingredients, and a focus on supporting the skin barrier while addressing the factors contributing to breakouts.
By understanding why acne develops, you can make informed skincare decisions and build a routine designed for long-term skin health.
Frequently Asked Questions About Acne Causes
What is the most common cause of acne?
Acne is typically caused by a combination of excess oil production, clogged pores, bacteria, and inflammation.
Can hormones cause acne in adults?
Yes. Hormonal fluctuations are one of the most common causes of adult acne, particularly in women.
Does stress make acne worse?
Stress can increase inflammation and oil production, which may contribute to more frequent or severe breakouts.
Is acne caused by poor hygiene?
No. Acne is a medical skin condition and is not caused by dirty skin.
Can genetics affect acne?
Yes. Genetics can influence how much oil your skin produces, how your body responds to hormones, and your overall susceptibility to acne.
Snail Mucin in Skincare: Benefits, Uses and What the Science Says
Snail mucin has become one of the most talked-about skincare ingredients in recent years, particularly within Korean skincare. Also known as snail secretion filtrate, it is prized for its hydrating, soothing, and skin-repairing properties.
Snail mucin contains a mixture of naturally occurring compounds, including glycoproteins, hyaluronic acid, peptides, antioxidants, and minerals. These components work together to support the skin barrier, improve hydration levels, and promote a healthier-looking complexion.
Benefits of Snail Mucin for Skin
Hydrates and Plumps the Skin
Snail mucin is an excellent humectant, helping the skin attract and retain moisture. This can leave the skin looking smoother, plumper, and more radiant.
Supports Skin Barrier Repair
A healthy skin barrier is essential for maintaining hydration and protecting against environmental stressors. Snail mucin can help support barrier function, making it particularly beneficial for dry, dehydrated, or sensitised skin.
Soothes Redness and Irritation
Many users find snail mucin calming, especially when their skin is experiencing irritation from active ingredients such as retinoids, exfoliating acids, or acne treatments.
May Help Improve Post-Acne Marks
While snail mucin is not an acne treatment, its skin-repairing and hydrating properties may support the healing process and help improve the appearance of post-inflammatory marks over time.
Is Snail Mucin Good for Acne-Prone Skin?
Snail mucin is generally considered suitable for acne-prone skin because it is lightweight, hydrating, and typically non-comedogenic. It can help maintain skin hydration without feeling heavy or greasy, which is particularly important when using acne treatments that may cause dryness or irritation.
However, snail mucin should be viewed as a supportive ingredient rather than a primary acne treatment. Ingredients such as salicylic acid, benzoyl peroxide, azelaic acid, and retinoids remain more effective for directly targeting acne breakouts.
Who Should Use Snail Mucin?
Snail mucin may be especially beneficial for:
-
Dehydrated skin
-
Sensitive skin
-
Compromised skin barriers
-
Post-acne recovery
-
Dull or tired-looking skin
-
Individuals using drying acne treatments
As with any skincare ingredient, patch testing is recommended before incorporating a new product into your routine.
The Bottom Line
Snail mucin has earned its popularity because of its ability to hydrate, soothe, and support skin repair. While it is not a cure for acne, it can be a valuable addition to a skincare routine, particularly for those looking to strengthen their skin barrier and support recovery from irritation or post-acne marks.
Our customers recommend our Atopic Skin Repair Cream, Natural Cleanser and 98% Snail Mucin Serum for treating acne,
