What Is Keratosis Pilaris?
Keratosis pilaris (KP) happens when keratin — a protein that normally sheds from the skin's surface — builds up and plugs individual hair follicles instead. This creates small, rough, uniform bumps, often described as feeling like sandpaper.
KP is extremely common, affects a large share of the population to some degree, and has a strong genetic component — it's frequently seen alongside dry skin or eczema. It most often appears on the upper arms, thighs, and sometimes the cheeks, and tends to improve, though not always fully resolve, with age.
Causes
- A buildup of keratin blocking hair follicles
- Genetics — KP frequently runs in families
- Dry skin, which can make the texture more noticeable
- Association with eczema and generally sensitive skin in many patients
Symptoms
- Small, rough, uniform bumps, often on the upper arms, thighs, or cheeks
- Skin that feels like sandpaper to the touch
- Mild redness around the bumps in some cases
- Symptoms that often worsen in dry winter months and improve somewhat in humid weather
Treatment Options at Dermatology of Seattle
- Gentle chemical exfoliation (lactic or salicylic acid-based) to smooth buildup
- Consistent, heavier moisturizing to soften keratin plugs
- Prescription-strength topical options for more stubborn cases
- Guidance on gentle skincare that won't worsen irritation
When to See a Dermatologist
Keratosis pilaris is harmless and doesn't require treatment, but see a dermatologist if it's bothering you cosmetically and over-the-counter exfoliants and moisturizers haven't helped after consistent use — prescription-strength options and professional guidance can make a meaningful difference.
Frequently Asked Questions
Can keratosis pilaris be cured?
There's no permanent cure, but it's very manageable with consistent exfoliation and moisturizing, and it often improves naturally with age. Many people achieve noticeably smoother skin with the right routine.
Is keratosis pilaris caused by poor hygiene?
No. It's a genetic, keratin-buildup condition unrelated to hygiene, diet, or anything you did to cause it.
Why do standard acne products not help my KP?
Because KP isn't driven by oil or bacteria the way acne is, oil-control acne products usually don't address the underlying keratin buildup and can sometimes just dry out and irritate the skin further. Gentle exfoliation and moisturizing work better.