According to the brand’s website, what happens behind the scenes goes a little like this: Scanning a beauty product’s bar code with your phone pulls up its ingredients. By law, beauty brands are only required to list ingredients in descending order based on weight. One of Forte’s favourite features on the Yuka App is that it highlights fragrance allergens, especially essential oils. “There’s a lot of science and data behind skincare products,” he explains. It’s also worth noting that in the UK and EU, beauty brands operate under some of the most stringent cosmetic safety laws in the world, Isaacs adds.