In a new video, Swedish TikTok user SwedishJohan shared a video from within the American section of his local store that sells candies such as Airheads, Laffy Taffy and Sour Patch Kids. In it, he flipped over a watermelon flavored Airhead, a fruit flavored taffy bar, showing that on top of the normal nutrition label, there was a paper tag that listed a warning. When translated, the warning reads: 'Contains the AZO dyes e129, e110, e102 which can have a negative effect on children's behavior and concentration.' These are also known as Red40, Yellow 6 and Yellow5 and are perfectly legal in the US but heavily regulated in Europe. In children, research has linked these dyes to behavioral problems like ADHD, restlessness, inattentiveness, aggression, irritability and problems sleeping. Johan said: 'So American candy comes with warning labels here in Europe'. The EU hasn't outlawed the three dyes, but a 2008 law says that any manufacturer that uses these products must put a warning label on their product. This has meant that many manufacturers have decided to swap the synthetic colorants for natural options. The three dyes are made from petroleum-oil, and found in more than 36,000 food products sold in the US, according to a 2024 report from the Environmental Working Group. They are also found in cosmetics, medications and personal care products like soap. In 1990, the FDA banned Red 3 from cosmetics after reports linked it to thyroid cancer.