How to make
Wash the eggs, they need to be at room temperature before boiling. Put to boil in salted water in a container that can fit them without too much empty space around them, so they don't crack during boiling.
They need to be hard-boiled, so after the water reaches boiling point, lower the heat to moderate and leave to boil another 8 min.
Toward the end, pour in the sugar crystals, take the pot off the stove and leave them for 5 min. Pour different colored drops of the pre-dissolved egg dyes onto a large piece of cotton.
Use gloves to avoid staining your hands. Wrap the egg well in the cotton and drip dyes on the cotton's outside as well. Leave the egg in it for 10 min. to take in the dyes.
Don't use 1 piece of cotton for more than 1 egg because the colors get ruined. Once the eggs cool you'll see the crystal patterns appear.
You can use different brands of dyes for greater variety.