"When I was first introduced to the Kosas Chemistry Deodourant Serene Clean ($15), I was sceptical. As somewhat of a self-proclaimed natural deodourant connoisseur, I'm picky about my formulas. To put it plainly, when it comes to matters of BO, the product has to work. After wearing this deodourant serum during multiple at-home workouts in my apartment, I can confirm this one works, and well. The aluminium and bicarbonate of soda-free formula contains a blend of AHAs instead to fight odour and as an added bonus, it soothes and brightens skin. Another major perk: it doesn't stain clothes." — Jessica Harrington, associate beauty editor