Keratosis Pilaris: How to Smooth Chicken Skin

As of February 22, 2026.

Those small, rough bumps on the backs of your arms have a name, and a reassuring one. It is keratosis pilaris, often called "chicken skin," and as a family physician I see it almost every week. The first thing I tell patients is that it is harmless. It is not an infection, it is not dangerous, and it does not mean you are doing anything wrong with your skin care. It can be stubborn, but it responds well to the right routine. DermaDex is a Canadian health technology company that connects patients with certified dermatologists and uses artificial intelligence (AI) to help triage skin concerns, and questions about chicken skin are some of the most common ones we receive.

What is keratosis pilaris, and why is it called chicken skin?

Short answer: Keratosis pilaris (KP) is a very common, harmless condition where dead skin cells plug hair follicles, creating small rough bumps that look and feel like permanent goosebumps or plucked poultry skin. It is not contagious and never turns into cancer. According to a StatPearls review indexed by the United States National Institutes of Health (NIH), keratosis pilaris affects roughly 50 to 80 percent of adolescents and about 40 percent of adults, which makes it one of the most frequent skin findings I see in primary care.

The bumps usually appear on the upper arms, the front of the thighs, the buttocks, and sometimes the cheeks in children. Each bump sits over a single hair follicle. The skin around them can look slightly pink or red, and the surface often feels like fine sandpaper. The American Academy of Dermatology (AAD) describes the texture as the hallmark sign, and it tends to be more noticeable in dry winter months, which matters in the Canadian climate where indoor heating pulls moisture out of skin for half the year.

What causes the rough bumps on your arms?

Short answer: Keratosis pilaris happens when keratin, a protein that protects the skin, builds up and plugs the opening of a hair follicle. That plug traps the fine hair underneath and forms a small, firm bump. The AAD notes that the exact trigger is not fully understood, but the tendency to form these plugs runs in families and is linked to dry skin and eczema.

Genetics play the biggest role. Keratosis pilaris often passes from parent to child, and many of my patients can point to a sibling or parent with the same arms. It is also closely tied to dry skin and to atopic dermatitis, the most common form of eczema. People with very dry skin or a history of eczema are more likely to have it, and flares often worsen in low humidity. Hormonal shifts matter too, which is why KP frequently appears or worsens during the teenage years and sometimes during pregnancy. It is not caused by poor hygiene, and scrubbing harder will not clear it.

How do you get rid of keratosis pilaris at home?

Short answer: You cannot scrub keratosis pilaris away, but a steady routine of gentle exfoliation plus heavy moisturizing smooths most bumps within four to six weeks. The AAD recommends short, warm (not hot) showers, a mild cleanser, a keratolytic cream that dissolves the keratin plug, and a thick moisturizer applied while skin is still damp. Consistency matters more than intensity.

Here is the routine I give patients, and it mirrors AAD self-care guidance:

Keep showers short and warm rather than hot, since hot water strips natural oils.
Use a fragrance-free, gentle cleanser instead of harsh soaps or rough loofahs.
Apply a keratolytic product (one with urea, lactic acid, salicylic acid, or an alpha hydroxy acid) a few times a week.
Moisturize at least twice a day, especially within a few minutes of bathing while skin is damp, which is the core of the AAD's tips to relieve dry skin.
Run a humidifier during dry Canadian winters to add moisture back into the air.

Avoid picking or aggressive physical scrubbing. It irritates the follicles, can cause dark marks or scarring, and tends to make the redness worse. Improvement is gradual, so give any routine a full four to six weeks before deciding it is not working.

Which ingredients actually smooth keratosis pilaris bumps?

Short answer: The ingredients with the best track record are humectants and keratolytics that loosen the keratin plug and pull water into the skin: urea, lactic acid, salicylic acid, glycolic acid, and ceramide-based moisturizers. The AAD lists these as the active components in over-the-counter creams that smooth KP. None of them cure the condition, but used consistently they soften the bumps and reduce roughness.

Ingredient	Type	Common strength (over the counter)	How it helps keratosis pilaris
Urea	Humectant and keratolytic	10% to 20%	Softens and dissolves the keratin plug while drawing water into the skin
Lactic acid	Alpha hydroxy acid (AHA)	5% to 12%	Loosens dead cells and gently exfoliates the surface of each bump
Salicylic acid	Beta hydroxy acid	0.5% to 2%	Penetrates oil in the follicle and helps clear the plug
Glycolic acid	Alpha hydroxy acid (AHA)	5% to 10%	Speeds cell turnover and smooths rough texture over time
Ceramide moisturizer	Barrier repair moisturizer	Not applicable	Rebuilds the skin barrier and reduces the dryness that worsens KP

A practical approach is to pair one exfoliating acid with one barrier moisturizer rather than stacking many actives at once. Acids can sting or cause redness on sensitive skin, so start a few times per week and build up slowly. If your skin becomes irritated, pull back and focus on moisturizing until it settles.

When should you see a doctor about chicken skin in Canada?

Short answer: Keratosis pilaris itself rarely needs a doctor, but book a visit if the bumps become red, itchy, painful, or spreading, or if you are not sure whether a spot is KP or something else. In Canada, your family physician is the first stop and the visit is covered by your provincial plan, such as the Ontario Health Insurance Plan (OHIP). We can confirm the diagnosis, rule out look-alikes, and prescribe stronger creams if needed.

Most cases never require a specialist. When they do, referral wait times can be long. The Canadian Institute for Health Information (CIHI) tracks the strain on specialty access across the country, and dermatology referrals in many provinces stretch into months. That gap is part of why DermaDex exists. Our platform lets you share photos for an early read, and you can learn more about how AI skin checks support, but never replace, a clinician. If a bump looks unusual, changes, bleeds, or does not fit the typical KP pattern, have it assessed in person. You can read more about distinguishing harmless growths from cancer in our guide to seborrheic keratosis and melanoma, or contact our team to ask about a review. This article is general information and not a diagnosis, so when in doubt, talk to a clinician.

Can keratosis pilaris be cured for good?

Short answer: There is no permanent cure for keratosis pilaris, but it is very manageable and often fades on its own with age. The AAD notes that many people see clear improvement by their 30s, and bumps frequently become less noticeable over time even without treatment. The goal of any routine is to control roughness and redness, not to eliminate the condition forever.

Because KP is built into how some people's follicles behave, the bumps tend to return if you stop your routine. That is normal and not a sign of failure. Think of it like managing dry skin: ongoing maintenance keeps it under control. Prescription options exist for stubborn cases, including stronger keratolytics and topical retinoids, and a family physician or dermatologist can guide those. The Canadian Dermatology Association (CDA) and the AAD both stress gentle, consistent care over harsh treatments. Keeping skin moisturized through dry winters and protecting it from sun damage, as Health Canada recommends in its sun safety guidance, supports overall skin health while you manage the bumps.

What else do people ask about keratosis pilaris?

How do I get rid of my keratosis pilaris?

You cannot remove keratosis pilaris permanently, but you can smooth it with a steady routine. The AAD recommends gentle exfoliation using a cream with urea, lactic acid, salicylic acid, or glycolic acid a few times a week, paired with heavy, fragrance-free moisturizer applied twice daily while skin is still damp. Keep showers short and warm rather than hot, skip harsh scrubbing and loofahs, and use a humidifier in dry months. Give any routine four to six weeks before judging it. Avoid picking, which can cause dark spots or scarring. If bumps stay red, itchy, or inflamed despite consistent care, your family physician can prescribe a stronger keratolytic or a topical retinoid and confirm the diagnosis.

What is the main cause of keratosis pilaris?

The main cause is a buildup of keratin, a protective skin protein, that plugs hair follicles and traps the fine hair underneath, forming a small bump. The AAD explains that the tendency to form these plugs is largely genetic and runs in families. It is closely linked to dry skin and to atopic dermatitis, a common form of eczema, so people with either are more likely to have it. Flares often worsen in low humidity, which is why many Canadians notice it most in winter. Hormonal changes during the teenage years can trigger or worsen it. Keratosis pilaris is not caused by poor hygiene, infection, or anything you did wrong, and scrubbing harder will not make it go away.

What vitamin deficiency causes keratosis pilaris?

No vitamin deficiency causes ordinary keratosis pilaris. This is a common misconception. True keratosis pilaris is a genetic, follicle-plugging condition, not a sign that you are missing a nutrient. There is a separate, rare condition called phrynoderma, linked to vitamin A and other nutritional deficiencies, that can look similar with rough, bumpy skin. Phrynoderma is uncommon in Canada and appears in the setting of significant malnutrition, not in a typical healthy person with bumpy arms. Taking vitamin A or other supplements will not clear standard keratosis pilaris and high-dose vitamin A can be harmful. If you have widespread rough skin alongside other symptoms, see your family physician to sort out the cause rather than self-treating with supplements.

What can be mistaken for keratosis pilaris?

Several harmless and a few less harmless conditions can resemble keratosis pilaris. Folliculitis, which is inflammation or infection of hair follicles, can look similar but is often more red, tender, or pus-filled. Acne can appear as bumps on the arms or back. Atopic dermatitis (eczema) frequently overlaps with KP and can coexist. Other look-alikes include milia, small white cysts, and a condition called Darier disease. The bumps of KP are typically small, evenly scattered, painless, and rough to the touch, sitting over individual follicles. Because some conditions look alike, a clinician's exam is the most reliable way to confirm keratosis pilaris. If bumps are painful, rapidly changing, bleeding, or limited to one spot, have them checked in person rather than assuming it is chicken skin.

Keratosis Pilaris: Why You Get Chicken Skin and How to Smooth It