How to lighten dark knees?

Knees experience repeated pressure and movement, and their skin can become dry or thickened. Scratching an itchy rash or using strong exfoliants can stimulate pigment after irritation. The colour may therefore be part of post-inflammatory hyperpigmentation rather than a layer that can simply be scrubbed away. New texture, redness or discomfort deserves attention because treating active inflammation comes before treating leftover colour.

Clean the area with a mild, non-perfumed cleanser and apply a rich moisturiser while the skin is still slightly damp. Avoid kneeling on rough surfaces when practical and choose clothing that does not rub. Use sun protection on uncovered knees. If the change persists, a dermatologist may recommend a carefully selected topical retinoid or chemical peel; introduce only one active treatment at a time and follow directions for contact time and frequency.

Book a consultation if the knee skin becomes very thick, velvety, painful, cracked, inflamed or intensely itchy, or if darkening also appears in skin folds. Medical review is also sensible when the change develops rapidly or follows a new medication or skin product. Stop any lightening product that causes marked stinging, swelling or blistering and ask for advice.

Is this pigment caused by irritation or an active condition? Which moisturiser and active ingredient fit my skin? How can I use a retinoid or peel without worsening pigmentation?