Dr. Hoyt is a food allergy physician who has works with families and schools to help manage food allergies. She is board-certified in allergy & immunology, pediatrics, and internal medicine, and was on faculty at esteemed hospitals including Cleveland Clinic and Vanderbilt before launching the Hoyt Institute of Food Allergy in her home state of Louisiana. She volunteers her time with the non-profit Code Ana, which she chairs and whose mission is to equip schools for medical emergencies like anaphylaxis. Dr. Hoyt lives in Louisiana with her family.

Kirsty is a children's book illustrator and artist who has illustrated multiple picture books for clients around the world. Originally from England, Kirsty moved to Edinburgh, Scotland in 2013 to start her degree in illustration at Edinburgh College of Art at The University of Edinburgh. During her degree, Kirsty learnt the practice of illustrating picture books and created two picture books for her degree show. After graduating in 2017, she continued to live and work in Edinburgh as a freelance illustrator and artist.