Keratosis pilaris (KP) usually causes clusters of tiny, rough-feeling bumps on the upper arms or front of the thighs. Acne can cause blackheads, whiteheads, pimples, or deeper painful lumps. Those patterns can help you decide what to ask about, but appearance alone cannot confirm a diagnosis.
How can you tell KP from acne?
Start with texture and the kinds of bumps you see. KP bumps are usually small, dry, and rough, like goosebumps. Acne has a wider range of lesions, including blackheads and whiteheads as well as inflamed or painful pimples. These clues are not exclusive: a clinician can examine the skin to determine whether the bumps are KP, acne, or another condition.
| Clue | Keratosis pilaris | Acne |
|---|---|---|
| Texture and appearance | Small, rough-feeling follicular bumps, often more noticeable on dry skin | May include blackheads, whiteheads, pimples, or deep painful lesions |
| Common pattern | Often appears in clusters on the upper arms or front of the thighs; children may also have bumps on the cheeks | Assessed by the types of lesions and where breakouts occur |
| What the bumps are | Plugs of dead skin cells in hair follicles | Can include open or closed comedones and inflammatory lesions |
| Care goal | Treatment is optional; care may ease dryness, itch, or roughness | Treatment is tailored to the acne type and aims to control breakouts |
The American Academy of Dermatology (AAD) explains that KP bumps are plugs of dead skin cells. Its overview of keratosis pilaris describes their rough feel and common locations.
What does keratosis pilaris look and feel like?
KP forms tiny bumps around hair follicles, often on the upper arms and front of the thighs. They may feel rough, like goosebumps, and dry skin can make them more noticeable. Children can also develop KP bumps on their cheeks.
Recommended Free Tools
#1 Best Overall
- [ CERAVE MOISTURIZING LOTION WITH SALICYLIC ACID ] Body moisturizer that gently exfoliates dry, scaly, or rough and bumpy skin on legs and upper arms. Lightweight, non-greasy feel that leaves skin feeling soft and smooth.
- [ EXFOLIATE & MOISTURIZE ] Salicylic Acid & Lactic Acid to help exfoliate, Hyaluronic Acid to help retain skin's moisture, and Niacinamide to help calm skin. SA is a Beta Hydroxy Acid (BHA), an exfoliator that removes dead skin cells and smooths skin.
- [ GENTLE ON SKIN ] Suitable for body. Fragrance free, allergy-tested, and non-comedogenic. Can be paired with CeraVe Renewing Salicylic Acid Cleanser for Rough and Bumpy Skin to cleanse & exfoliate.
- [ 3 ESSENTIAL CERAMIDES ] Ceramides are found naturally in the skin and make up 50% of the lipids in the skin barrier. All CeraVe products are formulated with three essential ceramides (1, 3, 6-II) to help restore and maintain the skin’s natural barrier
- [ DEVELOPED WITH DERMATOLOGISTS ] CeraVe Skincare is developed with dermatologists and has products suitable for dry skin, sensitive skin, oily skin, acne-prone, and more.
KP is harmless. You do not have to treat it unless the dryness, itch, or appearance bothers you. A dermatologist can usually identify it by examining the affected skin.
What does acne look like?
Acne can produce several different kinds of lesions. Blackheads are open comedones; whiteheads are closed comedones. Other acne lesions include pimples, which may be papules or pustules, and deeper nodules or cysts that can feel tender or painful. The AAD describes these acne signs and symptoms and notes that dermatologists consider both lesion type and location when assessing acne.
Rank #2
- One solution not a 10-step skincare routine: Our all-in-one lactic acid body moisturizers exfoliate while moisturizing so you can reduce the number of skin care products on your shelf
- Skin therapy with exfoliating moisturizer: Our exfoliating moisturizer for dry skin boosts healthy skin renewal through gentle, no-scrub exfoliation and turbocharged hydration, revealing softer, smoother skin in just 1 step
- Dermatologist-recommended body care: Amlactin is the #1 dermatologist-recommended moisturizer brand with lactic acid, offering a solution for all skin types and challenges, from normal to dry skin, to ashy and flaky skin, and even keratosis pilaris
- Award-winning lactic acid body lotion formula: Powered by 12% Lactic Acid, a gentle yet effective AHA, our dry skin lotion encourages natural skin cell turnover, exfoliates dead skin, and deeply hydrates for transformative results
- Free-from formulas: This cruelty-free, dye-free, paraben-free, phthalate-free, fragrance-free exfoliating lotion is lightweight, fast absorbing, non-greasy and pH balanced for dry to rough skin
Blackheads or whiteheads can be useful clues when you are comparing acne with KP’s typically rough, dry bumps. But bumps do not always fit a simple checklist, and not every acne-like eruption is acne.
What should you do if the bumps seem like KP?
If KP-related dryness or itch is bothersome, moisturizers containing urea or lactic acid may help soothe symptoms. The AAD recommends applying moisturizer after bathing, while the skin is still damp, and repeating at least two or three times daily in its keratosis pilaris care guidance.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Rank #3
- Bye bye bumps: This potent moisturizing cream exfoliates while it hydrates in one easy step – no scrubbing or rinsing required – so you can finally say goodbye to KP, chicken skin, strawberry skin, whatever you want to call it
- Derm-adored body care: AmLactin is the #1 dermatologist-recommended moisturizer brand with lactic acid, offering a solution for all skin types and challenges, from normal to dry skin, to ashy and flaky skin, and even keratosis pilaris
- It’s not just moisturizer, it’s skin therapy: Our dual-acting AmLactin cream formula softens and visibly smooths rough, dry bumps associated with keratosis pilaris (KP) by boosting healthy skin renewal with resurfacing, no-scrub exfoliation
- Our formula: Clinically proven 15% Lactic Acid AHA keratosis pilaris cream exfoliates to boost skin cell turnover and deeply hydrates to reveal healthier looking skin that feels smoother than ever
- Free-from formulas: This dye-free, paraben-free, phthalate-free, fragrance-free moisturizer for dry skin is rich, fast absorbing, non-greasy and pH balanced; formulated for keratosis pilaris
Some treatment plans also use exfoliating ingredients such as alpha hydroxy acid, glycolic acid, lactic acid, retinoids, salicylic acid, or urea. Follow a dermatologist’s instructions for the amount and frequency. These ingredients can dry or irritate skin; if irritation occurs, pause use for a few days and follow up with your clinician if needed.
Improvement may take four to six weeks. If you have followed the plan and see no improvement by then, tell your dermatologist. KP may require ongoing maintenance to keep bumps controlled; treatment does not cure it. A gentle loofah or at-home microdermabrasion may be suggested by a dermatologist in some cases, but aggressive scrubbing is not a substitute for a recommended plan.
Rank #4
- HYDRATION FOR ROUGH, BUMPY SKIN: Very dry skin lotion formula intensely hydrates to prevent dryness and provides 72 hours of hydration
- UREA ENRICHED FORMULA: Urea lotion is enriched with a Triple Moisturizing Complex of 10% Urea, Ceramide and Natural Moisturizing Factors
- EXFOLIATING LOTION: This rich urea enriched body moisturizer absorbs quickly and exfoliates skin to smooth rough and bumpy skin
- VERSATILE MOISTURIZER: Fragrance free body lotion for dry skin is also paraben and dye free; to use, apply the very dry skin lotion daily as needed; it can also be used as foot lotion or hand lotion
- INCLUDES: One 16.9 fluid ounce pump bottle of Eucerin Roughness Smoothing Body Lotion for Dry, Rough or Bumpy Skin; this moisturizer is easy to apply with the lotion pump bottle for effortless dry skin relief
What if the bumps seem like acne—or something else?
Acne treatment varies with the type of lesions. Salicylic acid is one nonprescription option discussed by the AAD, but it is not a reason to treat every bump as acne. If you are unsure what you have, or a rash persists despite reasonable care, ask a clinician to assess it. Some conditions that resemble acne, including KP, folliculitis, perioral dermatitis, and hidradenitis suppurativa, can require different treatment.
Seek timely clinical care for severe or rapidly worsening symptoms, or for painful or deep lesions. A dermatologist can examine the lesions and their locations, distinguish acne from look-alikes, and recommend care suited to the diagnosis. See the AAD’s acne diagnosis and treatment guidance.
Quick Recap
Best Value
- Award-winning formula: Combining clinically proven 15% Lactic Acid AHA with barrier-restoring ceramide 3, this powerful Amlactin lactic acid lotion provides immediate and 24-hour lasting dry skin relief
- Derm-adored body care: Amlactin is the #1 dermatologist-recommended moisturizer & exfoliating lotion brand with lactic acid, offering a solution for all skin types & challenges, from normal to dry skin, to ashy and flaky skin & even keratosis pilaris
- Free-from formulas: This cruelty-free, dye-free, paraben-free, phthalate-free, fragrance-free Amlactin Daily Moisturizing Lotion is soft, fast absorbing, non-greasy and pH balanced; ideal for very dry, flaky skin
- It’s not just lotion, it’s skin therapy: Our powerful exfoliating body lotion instantly transforms skin’s appearance and boosts healthy skin renewal with resurfacing no-scrub exfoliation, deep moisturization, and skin barrier support
- No scrub, no rinse, just smooth skin: Healing extremely rough skin texture shouldn’t be a hassle, which is why our advanced lactic acid body lotion for dry skin combines multiple skin care products into a one-step solution, providing deep nourishment
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
