Question: can you dye your hair with jello?
Answer: All you need to do is mix 1 packet of Jello powder with conditioner, or 2 packets if you have really long or thick hair, into a smooth paste. ... Cover your head with a shower cap, leave the Jello dye for 1 hour, then rinse it out. The dye will last for a few washes and then your hair color will be back to normal.