If you’re trying to look your best for a date or job interview, there’s one day and time in particular you want to avoid and there’s research to back it.

A new study by a self-tanning lotion called St. Tropez has figured out to the day and time when women look their oldest.  It’s at 3:30 PM on Wednesday afternoon and according to the website Jezebel.com, this is the reason why:

#1.) 46% of women drink over the weekend and your body needs to break down all the toxins and sugars you take in which puts a strain on your body. The effects of that strain can take up to 72 hours to show up on your face.

#2.) 37% of women say that they don’t get a good night’s sleep on Monday and that takes 48 hours to show up on their face.

#3.) Monday is also the day women are most likely to forget to use their skin-care products, giving the skin an even longer time to return to healthy.

#4.) Finally, one in eight women say Wednesday is the most stressful day of the week. So, one in five work through lunch and get an unhealthy snack early in the afternoon.