How to Treat Keratosis Pilaris (Chicken Skin)

You’ve probably run your hand over your upper arms and felt those tiny, rough bumps. Maybe they’re on your thighs too, or even your cheeks. They don’t hurt and they’re usually not itchy, but they won’t go away.

If this describes you, you’re dealing with keratosis pilaris (KP), better known as “chicken skin” or “strawberry skin.” Between 50 and 80% of teenagers and about 40% of adults have this, so it’s one of the most common skin conditions out there. Yet most of us end up Googling solutions late at night and trying products that promise smooth skin but never deliver.

The problem isn’t the products – it’s knowing which ones to use, how often, and why your skin does this in the first place.

Here’s what actually works for keratosis pilaris and why.

What Causes Keratosis Pilaris (Chicken Skin)?

Keratosis pilaris happens when keratin (a protein that makes up your skin, hair, and nails) builds up around hair follicles instead of shedding properly. Dead skin cells that should flake off get stuck, and that creates small plugs. Those plugs are the bumps you see and feel.

The texture is rough and sandpaper-like, like permanent goosebumps. The bumps can be skin-colored, red, or pink. On darker skin tones, they’re usually brown or hyperpigmented. Most people don’t get itching unless they pick at the bumps or the skin gets inflamed.

KP isn’t an infection, and it’s not contagious. It’s not caused by poor hygiene, and it’s not a food allergy. It’s also not acne, though it’s sometimes mistaken for breakouts on the face. It’s completely harmless.

Where Does Keratosis Pilaris Show Up?

KP shows up in the same spots for most people. The outer upper arms are the most common location. It also appears on the front of the thighs, buttocks, and cheeks. Some people get it on their forearms or lower legs, but that’s less common.

These spots produce less oil and get more friction from clothing. That makes keratin buildup worse.

KP usually appears symmetrically – if it’s on one arm, it’s on the other too. But severity varies by location. You might have noticeable bumps on your arms and barely any on your thighs, or the opposite. Facial KP is more common in kids and teenagers. It often improves with age and sometimes disappears completely by the twenties or thirties.

Who Gets Keratosis Pilaris (And Why)?

If your parents have keratosis pilaris, you’ll probably get it too. KP runs in families.

People with eczema or ichthyosis vulgaris are more likely to have KP. About 40% of people with eczema also have KP. If you have asthma, hay fever, or seasonal allergies, your risk is higher. They’re all connected.

Age matters. KP often starts in childhood or the teen years. It’s usually worst during the teens, then improves after 30. Some people’s KP gets better with age or disappears. But plenty of adults keep dealing with it.

If KP is tied to genetics, what’s actually happening under the skin?

The Science Behind Keratosis Pilaris (And Why You Can’t Cure It)

Why This Happens to Some People

Some people with KP have mutations in filaggrin, a protein that keeps your skin barrier working. When filaggrin doesn’t work right, your skin loses moisture easier and can’t protect itself as well. Drier skin means more keratin buildup, and that makes KP worse.

But not everyone with KP has filaggrin mutations. Other genes affect how your skin makes keratin and how well dead cells shed. That’s why KP runs in families even without this specific mutation.

Why There’s No “Cure”

KP is built into how your skin works. Treatments help your skin shed dead cells better and stay hydrated. But they don’t change your genetics. You can improve how your skin looks and feels. It just takes consistent work, not a one-time fix.

What to Use for Keratosis Pilaris

These recommendations are for body KP – arms, legs, and buttocks. Facial KP needs gentler products because face skin is more sensitive. If you have facial KP, read this guide on Facial KP treatment

Treating KP takes two things: chemical exfoliation and moisturization. The exfoliants clear out keratin plugs (clinical studies show lactic acid reduces bumps by 66% over 12 weeks). The moisturizers prevent irritation. You need both.

Exfoliating Body Lotions

These do most of the work. Apply once daily on dry skin after showering.

AmLactin Daily Moisturizing Body Lotion works for most people, especially if your skin is dry or sensitive. It has 12% lactic acid, which is gentle and has the best evidence for KP. The texture is light and absorbs fast without feeling greasy, but it has a slight medicinal smell that fades.

CeraVe SA Lotion for Rough & Bumpy Skin works better if your KP is red or inflamed. It combines salicylic acid with lactic acid. Salicylic acid cuts through oil and reduces redness, but it can dry out your skin. This formula has ceramides to balance that out, so it’s good for oilier skin.

Eucerin Roughness Relief Lotion is the gentlest option. It has 10% urea, which exfoliates gently and pulls moisture into your skin. Choose this if you’re new to acids or have sensitive skin. It’s fragrance-free, which helps if scents irritate you.

Alpha Skin Care Renewal Body Lotion is the strongest. It has 12% glycolic acid. Glycolic acid has tiny molecules, so it gets deep into skin and works fast. Only use this if your skin can handle it and other acids didn’t work. Start with 2-3 times per week.

Exfoliating Body Washes

Body washes with acids help your lotion work better, but they can’t replace it. The acids rinse off too fast to do much, but they prep your skin.

CeraVe SA Body Wash for Rough & Bumpy Skin is good if you want salicylic acid. Use it 3-4 times per week. Let it sit for 30-60 seconds, then rinse.

Glytone Exfoliating Body Wash has 8.8% glycolic acid. Same idea – let it sit briefly, then rinse well.

Barrier Moisturizers

You’ll also want moisturizers for days when your skin needs extra help. Use these on non-exfoliating days, or layer them over your lotion at night if your skin feels dry.

CeraVe Moisturizing Cream has ceramides, hyaluronic acid, and works over time. It’s thick but not sticky. Use it when your skin feels tight or dry.

Vaseline or Aquaphor Spray seal everything in. Put them over your other products, especially in winter or after hot showers. The spray is easier for big areas.

Combination Products

First Aid Beauty KP Bump Eraser Body Scrub has physical scrub (pumice) and chemical exfoliation (10% AHA). Use it 2-3 times per week max. It feels good because you notice it working right away, but don’t overdo it.

Choosing Your Products

Start with one exfoliating lotion for your skin type. Add a moisturizer if you get dry or irritated. You can add a body wash later, but you don’t need it. Don’t use multiple exfoliants at once until you know how your skin reacts.

The bumps may come back if you stop. This is management, not a cure.

How to Apply These Products

Exfoliating lotions: Use about a quarter-sized amount for each arm. Use more for thighs or bigger areas. Apply on completely dry skin after your shower – water makes the acid weaker and more irritating. Massage it in gently until it absorbs. Don’t scrub hard. The acid does the work.

Body washes: Apply to wet skin and let it sit for 30-60 seconds. You can wash other areas while you wait. Then rinse well. Don’t use a rough washcloth or loofah – just your hands.

Layering products: Put the exfoliating lotion on first. Wait 5-10 minutes, then add moisturizer if you need it. If you’re using both a wash and lotion the same day, make sure your skin is completely dry before the lotion goes on.

Before getting dressed: Wait 10-15 minutes for everything to soak in, especially if you’re wearing tight clothes. Otherwise the product rubs off onto your clothes instead of staying on your skin.

What to Do If You Get Irritated

Mild tingling when you first apply acid is normal. But if you get stinging that lasts more than a minute, redness that won’t fade, or burning, you’re overdoing it. Stop the acid completely for 3-5 days. Just use moisturizer. Once your skin calms down, start again at once or twice a week instead of daily. If the same product keeps irritating you even at low use, switch to a gentler acid.

And remember – apply lotions on completely dry skin, not damp. Water makes irritation worse. Some everyday habits can help your treatment work better or make it fail.

What Makes Keratosis Pilaris Worse

Hot showers: They feel great but strip your skin’s natural oils and make KP worse. Use lukewarm water instead. Keep showers to 5-10 minutes if you can. Pat dry with your towel instead of rubbing.

Harsh cleansers: If your soap foams a lot or makes your skin feel tight and squeaky, it’s too harsh. That “clean” feeling means you’ve damaged your barrier. Switch to something gentle and fragrance-free.

Dry air: Winter makes KP worse because dry air pulls moisture from your skin. A humidifier helps, especially if you live somewhere cold. It won’t fix KP, but it helps your skin hold onto moisture from your products.

Tight clothing: Friction irritates the follicles where KP forms. You don’t need to change your whole wardrobe. But if your KP gets worse where fabric rubs – elastic waistbands, tight sleeves – try looser clothes.

Stress: Stress can trigger flares, though we don’t fully understand why. It affects your skin barrier and causes inflammation. Managing stress won’t cure KP, but you might see fewer flare-ups.

Diet: This gets mentioned everywhere online, but there’s little evidence that specific foods cause KP. If you think something triggers yours (some people notice issues with dairy or gluten), track it. Just don’t cut out foods based on theories you read online.

When to See a Dermatologist

Most people can manage KP with drugstore products. But sometimes you need a dermatologist.

See one if your KP isn’t getting better after consistent treatment. Dermatologists can prescribe stronger retinoids or higher-strength acids that work faster than OTC options. If you’re not sure it’s KP, get it checked. Folliculitis, eczema, and fungal infections look similar but need different treatment.

If your KP is severely inflamed, infected, or scarring, don’t try to fix it yourself. Infected follicles need medical care. And scars become permanent if you ignore them.

If KP bothers you enough that you avoid certain clothes or activities, see a dermatologist. Some people say KP is “just cosmetic,” but if it matters to you, that’s enough. Dermatologists can try laser treatments or microdermabrasion, though results vary.

Dermatologists can’t cure KP either. But they have stronger options than drugstore products.

The Bottom Line

KP is frustrating because there’s no cure. It’s built into how your skin works. You’re managing it, not fixing it.

Chemical exfoliation works for most people. Lactic acid, salicylic acid, and urea can reduce the bumps if you use them consistently. Moisturizers prevent irritation while you exfoliate. Avoiding hot showers and harsh soaps helps.

Start with one product. If you don’t see improvement after consistent use, or if your KP is severe, see a dermatologist. They can prescribe stronger options. For most people, drugstore products work.

The bumps may come back if you stop. And even with consistent use, you’ll have good days and bad days. But you’re not guessing anymore. You know what’s happening under your skin, which ingredients work, and how to use them. That’s the difference between trying random products and actually managing KP.