Thank you for sharing your concern about dark skin on your knees. This is a common issue often caused by factors like friction, dryness, or pigmentation changes.

One treatment option available is Aziderm 20% Cream, which is a topical cream that may help lighten the darkened skin. However, this cream requires a prescription from a doctor, so it’s important to consult a dermatologist who can evaluate your skin and recommend the appropriate treatment.

In addition to medical treatment, you can try these simple self-care steps at home:

• Gently exfoliate the knees once or twice a week using natural scrubs like a mixture of chickpea flour (besan) and turmeric.
• Keep the skin moisturized with oils such as coconut oil or almond oil, which are commonly used in Indian households.
• Avoid excessive friction by wearing comfortable clothing and avoid kneeling for long periods.
• Protect your knees from sun exposure by applying sunscreen when outdoors.

Please consult a dermatologist to get a proper diagnosis and personalized treatment plan. They can guide you on safe and effective options tailored to your skin type.To narrow down potential causes, we will need some more information.Please tell me your age and gender, as I need this information to assist you better.