Yamada Bee Farm Crayons 18-Color Set

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[Crayons Safe for Children] Mitsubachi Crayons were born in 2007 from the desire of a female employee, who is also a mother, to create crayons that small children can use with peace of mind. We pursued safety by blending 40% beeswax, the raw material bees use to build their hives, and centering the other ingredients on natural derivatives such as olive oil, coconut oil, and safflower.
[Vibrant 18 Colors] These crayons are finished with pigments including beeswax, resulting in bright and vivid colors. They can be layered without the colors becoming muddy, allowing for beautiful gradations. 

How about these for mothers who want their children to draw safely?

There is a small mark on the lid, possibly from graffiti.
It is shown in the last image.

Thank you for looking.