One of the most common questions before a mehendi appointment is simple: how long do I actually need to sit still, and how long before I can use my hands normally again? Fresh mehendi paste needs to stay on the skin for at least 3-4 hours to develop a good stain, though most bridal artists recommend leaving it on for 6-8 hours, or even overnight, for the darkest possible color. The paste itself dries to the touch within 20-30 minutes, but 'dry' and 'ready to remove' are two very different things - the longer the paste stays on, even after it's dried and started flaking, the deeper the henna dye penetrates the skin. For simple, everyday designs, 2-3 hours is usually enough if you're short on time. But for bridal or occasion mehendi where you want the color to last 2-3 weeks, don't rush this step - it's the single biggest factor in how dark and long-lasting your stain turns out. Once the paste is off (scrape it away rather than washing it off with water, which fades the stain), avoid water contact for at least 12 hours. The color you see immediately after removing the paste is actually orange - it continues to oxidize and darken over the next 24-48 hours, reaching its final deep brown or maroon shade by day two. A few things speed up drying without hurting the stain: sitting under a fan, avoiding direct contact with clothing or bedsheets, and keeping your hands raised and still. Things that hurt the stain even if they speed up drying: using a hairdryer directly on wet paste (it can crack and flake off too early), or wrapping hands tightly in plastic before the paste has fully dried on its own. If you're booking a mehendi artist for a wedding, plan your schedule backward from this timeline. A bride wanting mehendi on both hands and feet for the wedding day should ideally get it done the evening before, giving the paste a full overnight sit and leaving the morning free for the stain to finish darkening - not for the paste to still be drying.