Mehndi stains, while beautiful, can sometimes linger longer than desired. These reddish-brown marks are created by lawsone, a natural dye found in henna leaves. Several gentle methods can help speed up the fading process. 

Soft exfoliation, soaking hands in warm lemon water, or massaging with oils like coconut or olive can be effective. It's important to avoid harsh chemicals or excessive scrubbing, as these can irritate the skin. 

Patience is key in dealing with mehndi stains, as forcing rapid removal may cause more harm than good. The gradual fading process is a natural part of the mehndi experience. For persistent stains or any skin irritation, consulting a dermatologist is advisable.