Hi!! The pigmentation of your hands could be either due to sun tan or also if you are using scrubs and Lufas for bath.
If it's because of sun tan than lightening creams will definitely help but also it is essential to use sunscreen to maintain the colour.
Next Steps
Peels will surely help to achieve better and quicker results.
Health Tips
You will require 3-6 sessions depending on the colour and tan.