Ye Qi brought all the cosmetics to the hospital. Bai Jingqing had them tested and indeed, a substance that could cause severe allergic reactions was detected in a foundation.
The makeup artist was questioned, but she repeatedly claimed that she didn't know. Huangfu Ye threatened her that she would be prosecuted if she didn't tell the truth, but she still claimed she didn't know.
Because she genuinely didn't know.
Huangfu Ye, unable to get any information, decided to report back to Beiming Han, who was watching from a monitor.
"This person isn't lying. Continue to investigate discreetly on the island, and ensure that you find something. There should be a surveillance camera in the makeup room, right?"
Huangfu Ye took another trip to the island himself and inspected the makeup room. As it was a roadside room turned into a makeshift makeup room, there wasn't any surveillance camera in there.