Keratosis Pilaris ('Chicken Skin'): Calm the Bumps Gently
Those rough little bumps on arms and thighs are keratosis pilaris. Learn what triggers them, how to read skincare labels, a gentle daily routine and realistic expectations for sensitive skin.
What keratosis pilaris is
Keratosis pilaris is one of the most common skin variations there is, and it is completely harmless. It shows up as small, rough bumps, often described as “chicken skin” or “strawberry skin”, usually on the backs of the upper arms, the fronts of the thighs, the buttocks and sometimes the cheeks. Each bump forms where keratin, the protein that makes up the outer layer of skin, builds up and plugs a hair follicle. Under the surface the tiny hair can become trapped, which is why the bumps can feel rough like fine sandpaper.
It is not an allergy, not an infection, and not caused by anything you have done. It often runs in families and is especially common in children and teenagers, frequently easing with age. Many people have it for years without realising it has a name. Because it is a structural quirk of how the skin handles keratin rather than a disease, the honest aim is to soften and manage it, not to cure it.
What it looks and feels like
The bumps are usually small, firm and evenly spread over an area, giving the skin a slightly rough, goose-pimpled texture even when you are warm. They may be skin-coloured, or each bump may sit in a ring of pink or red, and on darker skin tones the surrounding tone can look brown or grey. Sometimes there is a little itch, but often there are no symptoms at all beyond the texture and appearance. It rarely hurts. People most often notice it because it does not smooth out the way ordinary skin does, or because moisturiser alone does not shift the bumps.
What tends to trigger or worsen it
Keratosis pilaris is not triggered by a single ingredient the way an allergy is, but several things make it look and feel worse, and skincare choices are part of that:
- Dry air and dehydration. Cold winters, indoor heating and low humidity dry the skin and make the bumps rougher and redder.
- Hot, long showers and harsh soaps. These strip the skin’s natural oils, worsening dryness. Sodium lauryl sulfate (SLS) and heavily fragranced bar soaps are common offenders.
- Physical scrubbing and abrasive tools. Loofahs, gritty scrubs and vigorous exfoliating gloves inflame the follicles and increase redness without smoothing the bumps.
- Fragrance and essential oils, listed as “parfum” or “fragrance” and by essential-oil names, which can irritate skin that is also sensitive or eczema-prone.
The label angle matters most if your skin is reactive as well as bumpy. Choosing simpler, fragrance-free products reduces the background irritation that makes keratosis pilaris look angrier than it needs to.
How to read labels and choose products
The ingredient list, printed in INCI names (the standard international naming system for cosmetics), tells you what a product will actually do. A few pointers:
- Look for gentle chemical exfoliants. Urea, lactic acid, low-strength salicylic acid and glycolic acid help loosen the keratin plugs. Introduce one at a time and at a low strength.
- Look for humectants and softeners. Glycerin, urea and ceramides draw in and hold moisture, which softens the bumps and calms roughness.
- Scan for and avoid fragrance if your skin is sensitive. Watch for “parfum”, “fragrance” and named essential oils.
- Know fragrance-free versus unscented. “Fragrance-free” should mean no perfume has been added, while “unscented” can mean a masking scent has been used to hide a base smell. For reactive skin, fragrance-free is the safer choice.
- Patch test. Dab a new acid product on a small area of the inner arm once a day for a few days and watch for stinging or redness before using it more widely. If it stings or reddens the skin, drop the strength or the frequency.
A calm daily approach
Consistency beats intensity. Keep showers lukewarm rather than hot, and keep them short, then pat the skin dry rather than rubbing. Moisturise while the skin is still slightly damp, ideally twice a day, using a fragrance-free cream or lotion. A few times a week, if your skin tolerates it, use a mild exfoliating product with urea or lactic acid rather than a gritty scrub. Give it time. Keratosis pilaris manages rather than disappears, and improvements are gradual over weeks, so steady gentle care works far better than an occasional aggressive scrub. If a routine is calming the redness and softening the texture, that is success, even if the bumps do not vanish entirely.
When to see a GP or dermatologist
Keratosis pilaris rarely needs medical attention, but it is worth a check in some situations. See a GP or pharmacist if you are not sure the bumps are keratosis pilaris rather than something else, if the redness or itching is significant and bothering you, if the skin becomes sore, weepy or looks infected, or if home care over a couple of months has made no difference and it is affecting your confidence. A pharmacist can confirm it and suggest suitable products, and a GP or dermatologist can advise on stronger prescription options if needed. This guide is educational and does not replace personal medical advice.
Myth-buster
The most persistent myth is that keratosis pilaris means your skin is dirty or under-exfoliated, and that scrubbing hard will smooth it. In reality, harsh scrubbing inflames the follicles and makes the redness worse while doing nothing to release the keratin plugs. Gentle chemical exfoliation and regular moisturising are the kinder, more effective route.
Check products against your list
To check a product, a free browser extension like Clearya flags ingredients of concern automatically as you shop online, and a free analyser like Skincarisma lets you paste a product at your desk and see the ingredients you are avoiding flagged in the ingredient list. These rate a product on general criteria rather than against your own list.
Once you know what you are screening for, a personal-list app like ClearaScan lets you save the ingredients you react to once and scan any product to flag only your triggers. It also keeps a Reaction Journal for flare-ups, a shared Care Circle so family or carers can scan for you, and a Trusted Products list for items you have cleared, and it is currently in early access. (Disclosure: our editor co-founded ClearaScan, and we are not paid to mention the others.)
The Sensitive Skin Ingredient Decoder
A free one-page guide to reading a skincare label fast: the irritants to watch, the fragrance loopholes, and what "fragrance-free" and "hypoallergenic" really mean.
Common questions
Can keratosis pilaris be cured?
There is no permanent cure, but it is harmless and can be softened and managed with gentle moisturising and mild exfoliation. It also tends to improve on its own with age.
Will scrubbing the bumps make them go away?
No. Harsh scrubbing usually inflames the skin and worsens the redness without smoothing the bumps. Gentle chemical exfoliants like urea or lactic acid are kinder and more effective than physical scrubs.
Is keratosis pilaris a sign of a vitamin deficiency or poor diet?
For most people it is simply a common, inherited way the skin behaves around hair follicles, not a sign of deficiency. If you are worried about your general health, a GP or pharmacist can advise, but changing your diet is not a reliable fix for the bumps.
Why is mine worse in winter?
Cold, dry air and indoor heating pull moisture from the skin, which can make the bumps rougher and redder. Regular moisturising and lukewarm showers help through the colder months.
Is it linked to eczema or sensitive skin?
It often appears alongside dry or eczema-prone skin. If your skin is also reactive, introduce any exfoliating acid slowly and keep fragrance out, so you smooth the bumps without triggering irritation.