THE COMPLETE GUIDE TO ACNE

Understand What's Really Causing Your Breakouts and What Actually Works

If you're struggling with acne, you're not alone. Acne is one of the most common skin conditions in the world, affecting teenagers and adults alike. But despite how common it is, there's still a lot of confusion about what causes it, why it keeps coming back, and which treatments actually work.

This guide explains everything you need to know about acne in plain English. You'll learn how acne develops, what different types of acne look like, what can make breakouts worse, and the treatment options available if skincare alone isn't enough.

Whether you're dealing with the occasional breakout or persistent acne that's affecting your confidence, this guide will help you better understand your skin and the steps you can take to improve it.

 

Key Takeaways

• Acne is a complex inflammatory skin condition, not simply "dirty skin."
• Breakouts develop when excess oil, dead skin cells and bacteria block a hair follicle.
• Hormones, genetics and inflammation all play an important role in acne.
• There are several different types of acne, and each may require a different treatment approach.
• While some mild acne improves over time, persistent or severe acne often benefits from professional treatment.
• Picking or squeezing pimples can increase inflammation and raise the risk of scarring.
• Early treatment may help reduce the likelihood of permanent acne scars.
• Understanding what's causing your acne is the first step towards choosing the right treatment.

 

 

What Is Acne?

Acne is a common skin condition that develops when hair follicles become blocked with excess oil (sebum), dead skin cells and bacteria. This blockage triggers inflammation, leading to blackheads, whiteheads and inflamed pimples.

Although acne is most common during the teenage years, it can affect people of almost any age. Many adults continue to experience acne well into their 20s, 30s and beyond, particularly when hormones, genetics or other contributing factors are involved.

Acne isn't caused by poor hygiene, and it isn't something you can simply wash away. In fact, over-cleansing or scrubbing your skin too aggressively can sometimes make acne worse by irritating the skin and disrupting its natural protective barrier.

Acne can appear almost anywhere on the body, but it's most commonly found on the:

• Face
• Chin and jawline
• Forehead
• Nose
• Chest
• Back
• Shoulders

For some people, acne consists of a few occasional pimples. For others, it can become painful, widespread and leave permanent scarring if left untreated.

 

How Healthy Skin Normally Works

To understand why acne develops, it helps to first understand how healthy skin works.

Your skin contains millions of tiny openings called pores. Each pore is connected to a hair follicle and an oil gland, also known as a sebaceous gland.

These glands produce sebum, a natural oil that helps keep your skin soft, moisturised and protected. Under normal circumstances, sebum travels up the hair follicle, mixes with naturally shed skin cells and exits through the pore onto the surface of your skin.

This process happens continuously without you ever noticing it.

Problems begin when that normal flow becomes blocked.

If excess oil combines with dead skin cells inside the pore, it creates a plug. This trapped environment allows bacteria that naturally live on the skin to multiply more easily. As your immune system responds, the area becomes inflamed, leading to the redness, swelling and tenderness we recognise as a pimple.

Understanding this process is important because acne isn't caused by one single factor. It's the result of several processes happening at the same time, which is why treating acne often requires more than just washing your face.

 

How Does a Pimple Form?

A pimple doesn't appear overnight. It's the result of a series of changes happening beneath the surface of your skin, often days before you notice the first signs of a breakout.

Understanding this process can help explain why acne develops and why some treatments work better than others.

Step 1: A Healthy Pore

Everything starts with a healthy hair follicle, commonly called a pore.

Each pore contains a tiny hair and a sebaceous (oil) gland. These glands produce sebum, a natural oil that keeps your skin hydrated and protected. Normally, sebum flows freely to the skin's surface along with dead skin cells.

Step 2: Oil Production Increases

Hormonal changes, genetics and other factors can cause the sebaceous glands to produce more oil than usual.

Extra oil on its own doesn't cause acne, but it creates the ideal conditions for a blockage to develop.

Step 3: The Pore Becomes Blocked

At the same time, your skin may shed dead skin cells faster than normal.

Instead of leaving the pore naturally, these cells mix with the excess oil to form a plug inside the follicle.

This blockage traps everything beneath the surface.

 

Step 4: Bacteria Multiply

Your skin naturally contains a bacteria called Cutibacterium acnes (formerly known as Propionibacterium acnes).

In a blocked pore, this bacteria can multiply more easily because it's trapped in an environment rich in oil and with limited oxygen.

It's important to remember that these bacteria are a normal part of healthy skin—they only become a problem when conditions allow them to overgrow.

 

Step 5: Inflammation Begins

As the bacteria multiply, your immune system responds.

White blood cells move into the area to fight the bacteria, causing the pore to become inflamed.

This inflammation is what creates the redness, swelling, tenderness and pain often associated with acne.

 

Step 6: A Visible Pimple Appears

The final result is the breakout you can see on the surface of your skin.

Depending on how severe the blockage and inflammation are, it may appear as:

• A blackhead
• A whitehead
• A red inflamed pimple
• A pustule containing pus
• A deeper nodule
• A painful cyst

The more inflammation that develops, the greater the risk of the acne leaving behind long-term marks or scars.

 

Why This Matters

Acne isn't caused by a single problem. It develops because several factors happen at the same time—excess oil production, blocked pores, bacterial overgrowth and inflammation.

That's why there's no single treatment that works for everyone. The most effective treatment plan depends on which part of the acne process is contributing most to your breakouts, which is why understanding the underlying cause is just as important as treating the visible pimples.

 

What Causes Acne?

Acne doesn't have a single cause. Instead, it develops when several factors come together at the same time.

For most people, acne is caused by a combination of excess oil production, blocked pores, bacteria and inflammation. Hormones, genetics and lifestyle can also influence how often breakouts occur and how severe they become.

Understanding what's driving your acne is important because not all breakouts have the same underlying cause. That's one reason why a treatment that works well for one person may do very little for someone else.

 

1. Excess Oil Production (Sebum)

Your skin naturally produces an oil called sebum. This oil helps keep your skin hydrated and protects it from drying out.

However, when your sebaceous glands produce too much sebum, it becomes much easier for pores to become blocked.

Hormonal changes—particularly during puberty, menstrual cycles and pregnancy—can stimulate these glands, which is why many people notice breakouts during these times.

2. Blocked Pores

Your skin is constantly renewing itself by shedding dead skin cells.

Normally, these cells are released naturally from the surface of your skin. But if they become trapped inside a pore and mix with excess oil, they can form a blockage.

This blockage is the starting point for many types of acne.

Depending on whether the pore remains open or closed, it may develop into a blackhead, whitehead or an inflamed pimple.

 

3. Bacteria

Your skin naturally contains a bacteria called Cutibacterium acnes (C. acnes).

Having this bacteria doesn't mean your skin is dirty—it's a normal part of your skin's microbiome.

The problem occurs when a pore becomes blocked. The trapped, oil-rich environment allows the bacteria to multiply more easily, triggering your immune system to respond.

4. Inflammation

Inflammation is what turns a blocked pore into a red, swollen and sometimes painful pimple.

As your immune system reacts to the bacteria and blockage, white blood cells move into the area, causing redness, swelling and tenderness.

The greater the inflammation, the higher the risk of long-term marks or acne scarring.

 

5. Hormones

Hormones are one of the biggest contributors to acne.

Androgens, a group of hormones present in both men and women, can increase oil production within the skin.

This helps explain why acne often develops or worsens during:

• Puberty
• Menstrual cycles
• Pregnancy
• Perimenopause
• Times of increased hormonal change

Hormonal acne commonly affects the lower face, chin and jawline, although it can occur anywhere.

 

6. Genetics

If one or both of your parents experienced acne, you may be more likely to develop it yourself.

Genetics can influence:

• How much oil your skin produces
• How your pores function
• How your immune system responds to inflammation
• Your likelihood of developing acne scars

While you can't change your genetics, understanding them can help guide treatment choices.

 

7. Stress

Stress doesn't directly cause acne, but it can make existing acne worse.

During periods of stress, your body releases hormones that may increase oil production and promote inflammation. Stress can also affect sleep, diet and skincare habits, all of which may contribute to flare-ups.

Many people notice their skin worsens during exams, work deadlines or other stressful life events.

 

8. Lifestyle Factors

Several everyday habits may contribute to acne in some people.

These can include:

• Using skincare products that aren't suitable for your skin
• Sleeping in makeup
• Frequently touching or picking your face
• Wearing tight helmets, hats or sports equipment that causes friction
• Certain medications

Diet may play a role for some people, although the relationship is more complex than many myths suggest

It's important to remember that these factors don't affect everyone in the same way.

Why Does Acne Affect People Differently?

No two people experience acne in exactly the same way.

One person may have occasional blackheads, while another develops painful cystic acne. Some people experience acne for a few years during adolescence, while others continue to have breakouts well into adulthood.

That's because acne is influenced by a combination of genetics, hormones, skin type, lifestyle and individual biology.

Understanding what's driving your acne is the first step towards finding the most appropriate treatment—not simply treating the pimples you can see.

 

Why Am I Getting Acne?

Some people only get the occasional pimple before their period. Others struggle with persistent breakouts that don't seem to improve, no matter what skincare products they try.

The location of your acne, your age, your hormones and even your genetics can all provide clues about what's contributing to your breakouts. While it's not always possible to identify a single cause, understanding the bigger picture can help you choose the most appropriate treatment.

Why Won't My Acne Go Away?

If your acne keeps returning, it's usually because the underlying cause hasn't been addressed.

Many over-the-counter products focus on drying out existing pimples, but they don't always reduce excess oil production, inflammation or hormonal influences that contribute to new breakouts.

Acne is often an ongoing condition rather than a one-time event. Consistent skincare, healthy skin barrier function and, in some cases, professional treatment are often needed to achieve longer-term improvement.

Why Am I Suddenly Getting Acne?

Sudden breakouts can happen for several reasons.

Common triggers include:

• Hormonal changes
• Increased stress
• New skincare or cosmetic products
• Certain medications
• Changes to your diet
• Poor sleep
• Increased sweating or friction against the skin

Sometimes there isn't a single obvious reason. Several smaller factors may combine to trigger a flare-up.

 

Why Do I Keep Getting Pimples in the Same Spot?

Recurring pimples often develop in areas where pores are more prone to becoming blocked.

If inflammation doesn't fully settle before the skin begins producing excess oil again, the same follicle can become blocked repeatedly.

Constant touching, picking or squeezing can also delay healing and increase the likelihood of another breakout developing in the same area.

 

Does Acne Location Mean Anything?

You may have heard of "face mapping"- the idea that acne in different parts of the face points to problems with specific organs.

There is very little scientific evidence to support traditional face mapping.

However, the location of your acne can still provide useful clues based on skin biology and common acne patterns.

Forehead Acne

The forehead contains many oil glands, making it one of the most common places for acne to develop.

Breakouts here are often associated with excess oil, sweat, hair products or friction from hats and helmets.

Cheek Acne

Cheek acne may be influenced by oil production, bacteria, friction and repeated contact with items such as phones, pillowcases or makeup brushes.

For many people, it's simply one of the areas where acne naturally develops.

Chin Acne

Acne around the chin is commonly associated with hormonal fluctuations, particularly in women.

Breakouts may become more noticeable before menstruation or during periods of hormonal change.

Jawline Acne

Jawline acne is another area frequently linked with hormonal acne.

These pimples are often deeper, more inflamed and slower to heal than typical surface breakouts.

Nose Acne

The nose has a high concentration of sebaceous glands, making it more prone to blackheads, whiteheads and inflammatory acne.

Back and Chest Acne

The back, shoulders and chest also contain large numbers of oil glands and are common sites for acne, particularly in teenagers, athletes and people who sweat heavily.

When Should You Be Concerned?

Occasional pimples are completely normal.

However, it's worth seeking professional advice if:

• Your acne is painful or cystic.
• Breakouts are leaving scars or dark marks.
• Over-the-counter products haven't helped after several months.
• Acne is affecting your confidence or mental wellbeing.
• Your acne suddenly becomes much more severe.

Early treatment can often reduce the risk of long-term scarring and help prevent acne from becoming more difficult to manage.

 

TYPES OF ACNE

Not All Acne Looks the Same

Although we often use the word "acne" to describe any breakout, there are several different types of acne. Some are mild and sit close to the skin's surface, while others develop much deeper and can be painful or leave scars.

Identifying the type of acne you have is important because different types often respond better to different treatment approaches.

 

Blackheads (Open Comedones)

Blackheads develop when a pore becomes blocked with oil and dead skin cells but remains open at the surface.

The dark colour isn't dirt. It's caused by the contents of the pore reacting with oxygen in the air.

Blackheads are usually not inflamed and don't cause pain, but they can make the skin look congested and rough.

 

Whiteheads (Closed Comedones)

Whiteheads form when a blocked pore remains closed beneath the surface of the skin.

They appear as small white or flesh-coloured bumps and are generally less inflamed than larger pimples.

Trying to squeeze whiteheads can irritate the skin and increase the risk of infection or scarring.

 

Papules

Papules are small, red, inflamed bumps that don't contain visible pus.

They develop when inflammation causes the wall of the blocked pore to break down.

Papules may feel tender to touch and are a sign that your immune system is actively responding to the blockage.

 

Pustules

Pustules are what most people think of as a "pimple."

They look similar to papules but have a visible white or yellow centre filled with pus.

Although it may be tempting to pop them, doing so can push inflammation deeper into the skin and increase the risk of scarring.

 

Nodules

Nodules are larger, deeper and more painful than typical pimples.

They develop beneath the skin when inflammation extends deeper into the follicle.

Unlike pustules, nodules usually don't have a visible head and often take weeks to heal.

 

Cystic Acne

Cystic acne is the most severe form of acne.

These deep, painful swellings develop when inflammation becomes extensive beneath the skin.

Cystic acne has the highest risk of causing permanent acne scars and often requires professional assessment and treatment.

 

Hormonal Acne

Hormonal acne isn't a different type of pimple—it's acne that's primarily driven by hormonal changes.

It commonly appears around the:

• Chin
• Jawline
• Lower cheeks
• Neck

Hormonal acne often consists of deeper, more inflamed breakouts that may flare before menstruation or during periods of hormonal change.

 

Body Acne

Acne can affect more than just the face.

The chest, shoulders and back contain many oil glands, making them common areas for breakouts.

Body acne can range from small blackheads to painful inflammatory lesions and is often aggravated by sweat, tight clothing and friction.

 

Fungal Acne: Is It Really Acne?

Despite the name, fungal acne isn't actually acne.

It's a different skin condition caused by an overgrowth of yeast within the hair follicles.

Unlike traditional acne, fungal acne often causes small, itchy bumps that are usually very similar in size and may not respond to standard acne treatments.

If you're unsure which condition you have, it's best to seek professional advice before starting treatment.

 

How to Get Rid of Acne

Can You Get Rid of Acne?

Yes—but the best treatment depends on what's causing your acne and how severe it is.

Some people respond well to a consistent skincare routine, while others need prescription medication or professional treatments to control inflammation and prevent scarring.

The earlier acne is treated, the easier it is to reduce breakouts and lower the risk of long-term marks or scars.

How Long Does It Take to Clear Acne?

There isn't a single timeline that applies to everyone.

Mild acne may begin improving within a few weeks of starting the right treatment, while moderate to severe acne often takes several months to achieve noticeable results.

It's also normal for some treatments to cause a temporary flare before your skin starts improving. Stopping treatment too early is one of the most common reasons acne persists.

Can Acne Go Away Naturally?

Sometimes.

Teenage acne may improve as hormone levels stabilise with age, but many adults continue experiencing acne well into their 20s, 30s and beyond.

Even if acne eventually settles on its own, untreated breakouts can leave permanent scars or pigmentation, so waiting isn't always the best option.

 

What's the Best Treatment for Acne?

There isn't one treatment that works for everyone.

The most effective approach depends on:

• Your type of acne
• Its severity
• Your skin type
• Whether hormones are involved
• Whether acne scars are already developing

Many people achieve the best results by combining good skincare with professional treatment when needed.

Building an Effective Acne Routine

A simple routine is often more effective than using lots of products.

Morning

• Gentle cleanser
• Acne treatment if recommended
• Lightweight moisturiser
• Broad-spectrum SPF 30+

Evening

• Gentle cleanser
• Treatment products
• Moisturiser

Consistency matters far more than using lots of different products.

Ingredients That Can Help Acne

Salicylic Acid

Unclogs pores and blackheads

Benzoyl Peroxide

Reduces acne-causing bacteria

Retinoids

Prevent blocked pores and improve skin turnover

Azelaic Acid

Acne, redness and post-acne marks

Niacinamide

Oil control and inflammation

 

Treatments Your Doctor May Recommend

Depending on the severity of your acne, medical treatment may include:

• Prescription creams
• Oral antibiotics
• Hormonal medication
• Isotretinoin (for severe acne)

These treatments should always be discussed with a qualified healthcare professional.

 

Professional Treatments That May Help

Some people benefit from in-clinic treatments alongside a consistent skincare routine.

Depending on your skin, these may include:

• Skin Needling (primarily for acne scars)
• Chemical Peels
• LED Light Therapy
• HydraFacial (selected cases)
• Professional extractions

The right treatment depends on your skin assessment and should be tailored to your individual concerns.

 

What Doesn't Work

Unfortunately, there's no overnight cure for acne.

Be cautious of:

• Toothpaste on pimples
• Lemon juice
• Harsh scrubs
• Overwashing your face
• Constantly changing skincare products
• Picking or squeezing pimples

These can often make acne worse rather than better.

 

Key Takeaway

Most acne can be successfully managed with the right combination of skincare, patience and, when necessary, professional treatment.

The sooner acne is addressed, the lower the risk of developing long-term scarring and pigmentation.

 

How to Prevent Acne

Can Acne Be Prevented?

Not all acne can be prevented, but healthy skincare habits can significantly reduce the frequency and severity of breakouts.

Because genetics and hormones play a major role, it's not always possible to stop acne completely. However, looking after your skin consistently can help keep pores clear and reduce inflammation.

Wash Your Face—But Don't Overdo It

Washing your face removes excess oil, sweat and environmental impurities, but more isn't always better.

For most people, cleansing twice a day is enough. Overwashing can strip the skin's natural barrier, causing irritation and sometimes even more oil production.

Choose a gentle cleanser that's suitable for acne-prone skin rather than harsh soaps or scrubs.

Keep Your Hands Off Your Face

Touching your face throughout the day transfers oil, dirt and bacteria from your hands to your skin.

Picking or squeezing pimples can also push inflammation deeper into the skin, increasing the risk of infection, pigmentation and permanent scarring.

Use Non-Comedogenic Skincare

Some skincare and makeup products are more likely to clog pores than others.

Look for products labelled:

• Non-comedogenic
• Oil-free
• Suitable for acne-prone skin

These products are formulated to reduce the likelihood of blocked pores.

Wear Sunscreen Every Day

Sun exposure won't cure acne.

In fact, UV exposure can worsen post-acne pigmentation and may irritate skin that's using acne treatments such as retinoids or chemical exfoliants.

Choose a broad-spectrum SPF 30 or higher that's lightweight and non-comedogenic.

Shower After Sweating

Sweat itself doesn't cause acne, but when it's left sitting on the skin—especially under tight clothing—it can contribute to clogged pores and irritation.

This is particularly important if you experience acne on your chest, shoulders or back.

Be Careful With Hair Products

Hair oils, pomades and styling products can transfer onto your forehead and temples.

If you're prone to breakouts around your hairline:

• Keep long hair away from your face
• Wash your hair regularly
• Avoid heavy oily styling products touching your skin

Change Things That Touch Your Skin

Everyday items can collect oil, bacteria and product residue over time.

It's a good idea to regularly clean or replace:

• Pillowcases
• Makeup brushes
• Phone screens
• Hats and helmets

While these aren't direct causes of acne, keeping them clean may reduce irritation and bacteria on the skin.

Eat a Balanced Diet

Diet alone doesn't cause acne, but research suggests it may influence breakouts in some people.

Some individuals notice worsening acne with:

• High glycaemic foods
• Sugary drinks
• Large amounts of skim milk

Everyone is different, so avoid eliminating foods unless you've noticed a consistent pattern or have been advised by a healthcare professional.

Manage Stress

Stress doesn't directly cause acne, but it can make existing acne worse.

Chronic stress may increase inflammation and influence hormone levels, potentially leading to more frequent breakouts.

Regular exercise, quality sleep and stress-management techniques may help support overall skin health.

Don't Expect Overnight Results

Healthy skin takes time.

Even the best skincare routine usually requires several weeks before noticeable improvements appear.

Consistency is far more important than constantly changing products or trying the latest social media trend.

 

When Should You See a Professional About Acne?

 

When Is It Time to Seek Professional Help?

If your acne is painful, leaving scars, not improving with over-the-counter treatments, or affecting your confidence, it's worth seeking professional advice.

Many people wait months—or even years—hoping their acne will clear on its own. While mild breakouts may improve with a consistent skincare routine, persistent or severe acne often requires a more targeted approach.

The sooner acne is managed effectively, the lower the risk of permanent scarring and long-term pigmentation.

 

Signs You Shouldn't Ignore

Consider booking a professional skin assessment if you:

• Have painful, deep pimples or cysts
• Notice acne scars starting to develop
• Have tried multiple products without improvement
• Continue breaking out despite a consistent routine
• Have acne on your face, chest and back
• Feel embarrassed or avoid social situations because of your skin

Acne Scars Can Be Permanent

Active acne eventually heals, but scars can remain for life.

Inflammation deep within the skin damages collagen, which can leave depressions or raised scars once the pimple resolves.

Treating acne early is one of the most effective ways to reduce your risk of permanent scarring.

Not Every Breakout Is Acne

Some skin conditions look similar to acne but require completely different treatment.

Examples include:

• Rosacea
• Folliculitis
• Fungal acne (Malassezia folliculitis)
• Perioral dermatitis

Using the wrong treatment can sometimes make these conditions worse, which is why an accurate diagnosis is important.

What Happens During a Professional Skin Assessment?

A professional assessment usually involves looking at:

• Your type of acne
• The severity of your breakouts
• Your skin type
• Your current skincare routine
• Possible hormonal or lifestyle factors
• Whether acne scars or pigmentation are present

This information helps determine the most appropriate treatment plan for your skin.

Professional Treatments May Be Recommended

Depending on your skin and goals, treatment options may include:

• Medical-grade skincare
• Chemical peels
• LED Light Therapy
• Professional extractions
• Skin Needling (for acne scars)

Referral to a GP or dermatologist if prescription medication is appropriate

The best treatment is the one that's tailored to your individual skin—not simply the most popular one.

Don't Wait Until Scars Develop

Many people seek help only after acne has already caused scarring.

Early treatment isn't just about clearer skin today—it's about protecting your skin for the future.

If your acne isn't improving or is beginning to leave marks, getting professional advice sooner rather than later can make a significant difference.

Key Takeaway

Acne is one of the most treatable skin conditions, but no single solution works for everyone. Understanding your skin, using evidence-based treatments and seeking professional advice when needed can help you achieve healthier, clearer skin while reducing the risk of long-term scarring.

 

Ready to Take the Next Step?

Reading about acne is a great place to start—but finding the right solution for your skin is what makes the biggest difference.

At Kalani Clinic, we take the time to understand your skin, identify what's contributing to your breakouts and recommend treatments that are tailored to your concerns and goals. Whether you're dealing with occasional pimples, persistent adult acne or acne scars, we'll help you create a personalised plan based on your skin—not a one-size-fits-all approach.

Ready to start your journey to clearer skin?

Book a Skin Consultation