The higher the water content, the higher the likelihood of contamination. Of particular note were 'blender' sponges, a type of egg-shaped makeup applicator that has become popular in recent years for applying foundation and contouring. These were the worst offenders, with the highest rate of fungal contamination. In total, the team examined 467 products - 96 lipsticks, 92 eyeliners, 93 mascaras, 107 lip glosses and 79 blender sponges. Makeup doesn't go 'off' like food. But the use-by dates aren't just there for funsies; the date on the packaging indicates the length of time preservatives in the product are expected to...