If you've found yourself wondering why a plethora of celebrities seem to be wearing red tinted glasses - you're far from alone.
Long gone are the days of suffering through contact lenses day in and day out. Glasses are very much in vogue, as are different tinted lenses.
They're somewhat of an elevated accessory, with the red tinted lens being the must-have tint above all others.
It stated: "They're an incredible tool for improving sleep and recovery.
Pharrell has taken part in the red lens trend (Dave Benett/Getty Images for Focus Features)
"The secret lies in how they block harmful artificial light, specifically blue, green and ultraviolet wavelengths.
"These are the types of light that disrupt your body's production of melatonin, the hormone responsible for regulating your sleep cycle.
"Deep, restorative sleep allows bodies to repair muscle tissue, lower cortisol levels, and recharge energy for the next day."
Ultimately, the glasses can help people wind down naturally - something which is worth its weight in gold.
Oliver Omura, the founder of Specs Collective, offered an alternative take - making it less about ease and more about age.
He told the Wall Street Journal: "I think it helps for older gentlemen who want to maybe hide some of their eyes that make them appear a little older."
Though, of course, it's not just aging stars such as Robert Downey Jr. and Elton John opting for the lenses, the likes of Selena Gomez and Drake have also sported them - with the latter rapping in a song 'Got the rose pink-tinted lenses, it’s a Wednesday', upping their cool level by approximately 200%.
