4 Scientific Reasons Why Lack of Sleep Harms Your Skin

It's a common experience: your skin looks dull and breakouts show up the day after a rough night's sleep. SKINROUTE breaks down 4 changes sleep deprivation leaves on skin, along with sleep habits for healthier skin, backed by research.

The Signs Sleep Deprivation Leaves on Skin

The skin changes you notice on a sleep-deprived day aren't just in your head. In a study comparing skin between a good-sleep-quality group and a poor-sleep-quality group, the poor-sleep-quality group showed more signs of skin aging and slower barrier recovery. If several of the signs below overlap for you, look at your recent sleep before changing your skincare.

1. Sebum and Breakouts Tend to Increase

On days you're sleep-deprived, your body and mind tire more easily and you tend to feel more stress. The American Academy of Dermatology (AAD) notes that stress can increase sebum production and worsen breakouts and itching. If your skin already breaks out often, it can flare up more easily during periods of poor sleep.

Staying up late also throws other habits off track. Late-night snacking, skipping evening cleansing out of tiredness, and resting your chin on your hand or touching your face more often all add up to more breakout triggers. The path from stress to skin is covered in The Link Between Stress and Skin.

2. Slower Barrier Recovery Leads to Dryness

The skin barrier is made up of dead skin cells and the lipids that fill the spaces between them, holding in moisture and blocking outside irritants. In the study mentioned above, the poor-sleep-quality group's barrier — after being deliberately weakened — took longer to return to its original state.

When barrier recovery slows down, moisture escapes skin more easily (an increase in transepidermal water loss), which can mean lingering tightness after cleansing, flaking, and stinging from products you normally use fine. During periods of poor sleep, skip steps that put extra strain on your barrier, like exfoliating, and moisturize generously.

3. Aging Signs Can Build Up Faster

In the same study, the poor-sleep-quality group also showed more age-related signs. That said, it compared two groups at a single point in time, so it can't be said that sleep alone is responsible.

There's also a review paper outlining several pathways through which ongoing psychological stress may affect skin aging. A night or two of poor sleep won't cause wrinkles, but the longer a lifestyle of insufficient sleep and high stress continues, the more likely it is to leave a mark on skin. Other causes of wrinkles are covered in How Wrinkles and Fine Lines Form.

4. The Eye Area and Complexion Look Tired First

It's common to notice dark, puffy under-eyes the morning after a rough night. The skin under your eyes is thinner than elsewhere on your face, so blood vessel color and shadows show through more easily when you're tired or puffy. A dull, lackluster complexion is another change people often notice on a sleep-deprived day.

That said, dark circles have several causes — inherited pigment, thin skin, and shadowing under the eyes — so they can linger even after a full night's sleep. Eating salty food or drinking late into the evening tends to make morning puffiness worse, so it helps to cut back on those too.

Sleep Habits for Your Skin

Sleep habits for better skin don't need to be complicated. Start with going to bed and waking up around the same time every day.

• A consistent schedule: Not shifting your wake-up time much on weekends keeps your body's rhythm steadier.
• Bedroom environment: Keep your bedroom dark, quiet, and cool. Light and noise both make you wake up more often.
• Put your screen down: Scrolling on your phone in bed tends to keep pushing back the time you actually fall asleep.
• Caffeine and alcohol: Coffee in the late afternoon and alcohol before bed can both make your sleep lighter.

Skincare for a Day When You're Sleep-Deprived

On a day you pulled an all-nighter or didn't get enough sleep, your skin can be more sensitive than usual. On days like this, it's safer to stick to the basics rather than adding anything new.

Frequently Asked Questions

Does not sleeping enough really cause dark circles?

Under-eyes often look darker and puffier on a sleep-deprived day. That said, dark circles come from several overlapping causes — inherited pigment, thin skin, and shadowing under the eyes — so they can linger even with plenty of sleep.

How many hours should I sleep for my skin?

There isn't a set number of hours that's ideal for skin. Instead of focusing on a number, pay attention to whether you go to bed and wake up around the same time every day, and whether you feel rested in the morning. If you're always tired, that can be a sign you're not getting enough sleep.

How should I care for my skin the day after an all-nighter?

Skip steps that could be irritating, like exfoliating or retinol, and stick to a basic cleanse-moisturize-sunscreen routine. If your skin feels especially tight, add an extra layer of moisturizer, and going to bed earlier than usual that night is the best care you can give it.

Does catching up on sleep over the weekend help my skin recover?

A good night's sleep can noticeably improve dullness. But if a pattern of catching up on lost sleep over the weekend keeps repeating, it tends to throw off your body's rhythm — so focus on building a habit of going to bed around the same time every day first.

Check Your Lifestyle Habits

The habits that throw off your skin condition — like sleep — differ from person to person. SKIN100 Precision Skin Analysis analyzes 8 core factors — lifestyle habits, skincare habits, external environment, and more — through over 100 survey questions to flag which of sleep, stress, or skincare is disrupting your skin. Your AI coach guides you through the habits and routine to change first based on your results.

References