Sweat droplets occur when lipstick is exposed to fluctuating temperatures that cause lipstick oils to rise to the surface. Sweaty lipsticks aren't bad news, yet. However, the only time you should throw away your “sweaty” lipstick is if you notice mold on your lipstick. Contrary to what we thought, those little droplets that surround your bullet aren't water at all.
When the oils or waxes in the formula are partially compatible or not compatible, Rosario says they will begin to separate over time. However, a drastic change in climate can cause these conditions to occur sooner. If a lipstick is prone to sweating, it will continue to do so as it ages or when exposed to heat. Bite lipsticks, in particular, sweat more frequently than other brands because of their natural food-grade ingredients.
It's totally normal and there's nothing to worry about. Sometimes, upper lip perspiration is caused by hyperhidrosis, a condition characterized by excessive perspiration with no other symptoms. Yes, I have bought them from several brands and sometimes I buy a new lipstick that does not have this problem and, a month later, they begin to develop. One was for lipsticks that looked good, but I wasn't sure if they were used, another for lipsticks with stains, another for lipsticks with obvious sweat, and a last one for lipsticks that were definitely used.
Most people will tell you that if you think there's a chance that your lipstick is moldy, you should throw it away. According to Rosario, you don't have to worry about sweating from lipstick, but you might want to pay attention to it. Sweating on lipsticks is quite common and not many people bother to check it out, but in reality brands are required to review the items in question for you. One by one, I picked up each lipstick (even the new ones if they had stains or sweat) by sticking the bullet in the alcohol keeping the handle face down for ten seconds.
Yes, it's definitely normal for lipsticks and other cream products to form cosmetic sweat when exposed to heat during shipping and storage. Once temperatures rise in summer, I transfer all my lipsticks and lip balms to a pair of plastic baskets in the fridge. When stored in proper conditions (dark and cool places), lipsticks should not sweat, but they will sweat in hot, humid weather or if stored in warm rooms. I hope your lipstick is just sweating, but don't risk it if the stains come back after you clean it.
It's hard to tell which lipsticks might have a greater tendency to sweat: “It all comes down to the compatibility of all the components of the formula,” Rosario says. Although lipsticks are designed to withstand temperatures around 50°C or 122°F, it's important to pay attention to the formula when kept at high temperatures. When lipsticks are transferred from temperature-controlled storage and then shipped at extreme temperatures, the drastic change in climate can cause the formula to “sweat,” they said. But the lipstick I received in my Jeffree Star Mystery Box had moisture stains (normal when it's hot) and hair.