Keratosis pilaris happens when keratin, a protein in skin, forms plugs inside hair follicles, the openings where hairs grow. The result is small, rough bumps, commonly on the upper arms and thighs. Ordinary keratosis pilaris is harmless and not contagious, so treatment is optional if the appearance, dryness or itch does not bother you.134
How long does keratosis pilaris last?
Most people have keratosis pilaris for years. Bumps that start in the teenage years often clear by the mid twenties, while others become less noticeable around age 30 or persist longer. There is no reliable way to predict who will clear completely. These ages describe common patterns, not a deadline.1256
Can keratosis pilaris go away on its own?
Yes. Many people improve without treatment, with clearing happening gradually over many years. Bumps can also become less noticeable in summer and return in winter. A clear patch during warmer weather is therefore not necessarily permanent clearing; dry winter air can make the bumps prominent again.146
Does keratosis pilaris get worse with age?
The usual pattern is improvement with age, not steady worsening. Childhood bumps can clear before adolescence, then flare again around puberty as hormones change. Keratosis pilaris can continue into adult life, and dryness or friction from tight clothing can worsen its appearance even when the longer term pattern is improvement.27
How to make the bumps less noticeable
A smoother appearance is the aim of treatment, which is a smaller job than the word "transformation" on a jar suggests. Moisturizers help dryness, while exfoliating ingredients loosen the buildup that makes skin feel rough.14
- 1Take a short, lukewarm shower or bath. Use a mild, unperfumed cleanser rather than harsh soap.
- 2Apply a creamy moisturizer within five minutes of getting out, while skin is still damp. Gently apply moisturizer at least two or three times daily.
- 3For rough bumps, consider a cream containing urea, lactic acid or salicylic acid. These ingredients help moisturize or loosen the scale around follicles.
- 4Start exfoliation two or three times weekly rather than scrubbing every day. Increase gradually only if needed and tolerated; follow your dermatologist's directions for prescribed treatments.
- 5Pause an exfoliating medicine for a few days if skin becomes dry or irritated. Reduce exfoliation if redness, rash or irritation develops.
How soon will treatment help?
Expect weeks of consistent care before noticing improvement; improvement often takes months. If a dermatologist's treatment plan has not helped after four to six weeks, tell them. Some people need to try several treatments. Exfoliation smooths bumps but does not relieve the redness or itching that can accompany them.137
A maintenance routine keeps treatment results going, so the empty bottle is not a graduation certificate. Bumps are likely to return when medicine is stopped. A dermatologist can help simplify ongoing care, sometimes by reducing treatment frequency or switching to a moisturizing cream.13
Can you prevent keratosis pilaris?
Skin care can keep bumps under control, but there is no cure. Focus on reducing dryness and irritation: moisturize daily, avoid hot baths and harsh scrubs, and do not scratch or pick the bumps. Avoid clothing that rubs affected areas. A humidifier can help when indoor air is dry.4567
When should you get the bumps checked?
Ask a pharmacist for help if skin becomes itchy or inflamed, or your routine is not helping. See a clinician if bothersome bumps persist despite lotions. Painful, large or pus filled bumps, or a sudden new eruption, need assessment rather than assuming they are keratosis pilaris. Acne, eczema and folliculitis, inflammation or infection of hair follicles, can look similar.357
Where this answer comes from
- 1Keratosis pilaris: Diagnosis and treatmentaad.org
- 2Keratosis pilaris: Who gets and causesaad.org
- 3Keratosis pilaris: MedlinePlus Medical Encyclopediamedlineplus.gov
- 4Keratosis Pilaris: Symptoms, Causes, and Treatmentdermnetnz.org
- 5Keratosis pilarisnhs.uk
- 6Keratosis Pilaris: What It Is, Causes, Symptoms & Treatmentmy.clevelandclinic.org
- 7Keratosis pilaris: Treatment and self-care for this common skin conditionhealth.harvard.edu