It sounds distressing to have dark spots covering your hands for such a long time. This condition may be related to pigmentation issues like melasma or other skin pigment disorders, which sometimes respond to specific topical treatments.

A cream containing hydroquinone, mometasone, and tretinoin—such as HHLite Cream—can help lighten dark patches by reducing melanin, decreasing inflammation, and promoting skin renewal. However, this medication should only be used under the supervision of a dermatologist because it can cause side effects like irritation and increased sun sensitivity. Avoid applying it on broken skin or near sensitive areas, and protect your hands from sun exposure while using it.

I recommend consulting a dermatologist who can examine your hands, confirm the diagnosis, and prescribe the appropriate treatment tailored to your skin type and condition. If you want, I can explain how these ingredients work or suggest additional skin care tips.To narrow down potential causes, we will need some more information.I understand you have dark spots on your hands for the last six years. To assist you better, could you please provide your age and gender?