What should you know about keratin spots on arms?

Keratin is a natural skin protein. When it collects around hair-follicle openings, the skin can feel grainy and show small flesh-coloured, pink, or brown bumps. This pattern is commonly called keratosis pilaris. It is different from pus-filled pimples, although follicular irritation can make some bumps red or tender. Shaving, friction, dry weather, and harsh scrubbing may make the texture more noticeable. A close look matters because folliculitis and acne can also create arm bumps, while a single rapidly changing lesion deserves separate assessment.

Use a gentle cleanser and apply a fragrance-free moisturiser soon after bathing. Products containing urea, lactic acid, or salicylic acid may soften rough plugs when used as directed, but introduce one product at a time and stop if burning or marked redness develops. Avoid picking, aggressive exfoliation, and tight clothing that rubs the area. Improvement usually requires consistent care over several weeks, and maintenance may be needed because the tendency to form plugs can return. A dermatologist can distinguish texture from acne or folliculitis and suggest a suitable routine.

Arrange a skin assessment if bumps bleed, crust, become increasingly painful, drain pus, spread quickly, or change in colour or shape. Seek prompt care for rapidly worsening redness with warmth, swelling, or fever. Book a routine appointment if the appearance is new, the spots do not settle with gentle care, or you are unsure whether they are keratin plugs. A clinician may examine the follicles and recommend treatment based on the exact diagnosis.

Could these bumps be keratosis pilaris, acne, or folliculitis? Which moisturiser or exfoliating ingredient suits my skin? How often should I use it, and what reaction means I should stop? Would any medicines, shaving habits, or friction be contributing?