Here are a few tips to prevent knee darkening:

Use sunscreen: Apply a broad-spectrum sunscreen with at least SPF 30 to protect your knees from UV rays.

Keep skin moisturised: Regularly hydrate your skin to prevent dryness and flakiness.

Avoid excessive friction: Wear protective clothing or pads if you engage in activities that cause friction on your knees.

Consult whenever needed: If you notice any unusual changes or persistent irritation, consult a dermatologist to ensure there are no underlying issues.

 

Here are a few elements that'll help you with your skin lightening treatments:

Vitamin C: Known for its antioxidant properties, Vitamin C can help brighten the skin and reduce melanin production.

Retinoids: These Vitamin A derivatives promote faster skin cell turnover, helping to even out skin tone and reduce dark spots.

Alpha-Hydroxy Acids (AHAs): AHAs exfoliate dead skin cells, which can help lighten dark patches and improve skin texture.

 

All the same, here are some elements you should avoid:

Hydroquinone: Effective but can cause redness and dryness in sensitive skin.

Hydrogen Peroxide: Can irritate and even blister the skin.

Mercury: Dangerous and can damage the skin with prolonged use.

Topical Steroids: Not usually recommended for OTC treatments due to potential side effects like thinning skin and stretch marks.

 

For those who prefer natural treatments, several home remedies might help improve the tone of your knees over time:

Aloe vera: This plant soothes the skin and may reduce pigmentation caused by sun exposure.

Turmeric: Contains curcumin, which can help lighten skin and even out skin tone.

Green tea: Rich in antioxidants, it may help inhibit melanin production and brighten the skin.