Postpartum night sweats happen because oestrogen drops sharply after birth, and your body offloads a lot of the extra fluid it held onto during pregnancy — sweating is one of the ways it does that. For your skin, the repeated cycle of sweating and drying overnight can strip natural oils and leave your face feeling tight, dehydrated or reactive by morning, even though the sweating itself isn't a skin problem.
General information, not medical advice — always check with your GP, midwife or pharmacist about your own skin and any product you're unsure of.
Why Postpartum Night Sweats Happen
The hormonal drop after delivery is one of the steepest your body goes through, and night sweats are a very common (and normal) way it re-regulates. They typically ease within the first few weeks postpartum, though breastfeeding hormones can extend the timeline for some mums. It's part of the same broader shift I cover in the 3-month wall: postpartum hair shedding and dull skin.
What Repeated Sweating Does to Your Skin Overnight
Sweat itself isn't the enemy, but the evaporation cycle is — as sweat dries, it pulls moisture from your skin's surface, which can leave your barrier feeling more compromised by morning. Combine that with tossing and turning on a hot pillow and you've got a recipe for a tight, flushed, easily irritated face, similar to what I described in why everything suddenly stings after pregnancy.
Protecting Your Skin While the Sweats Last
Go a little richer on your night moisturiser than you normally would, and consider a breathable, moisture-wicking pillowcase if you can manage the laundry of it. A hydrating overnight mask once or twice a week can help top up moisture that gets lost through the night, and keeping a glass of water by the bed helps you rehydrate from the inside too. Skip harsh actives on the nights you know sweating will be heavy — this isn't the time to test a new exfoliant.
When Night Sweats Usually Settle
Most mums notice night sweats easing within the first six to eight weeks, though it can run longer while breastfeeding. If they're accompanied by fever, redness, or pain, that's a reason to check in with your GP rather than assume it's hormonal.
Questions Mums Ask
How long do postpartum night sweats usually last?
For most mums, they ease within six to eight weeks, though breastfeeding hormones can extend this for some. Every body is different, so don't worry if yours takes a bit longer to settle.
Should I change my skincare routine because of night sweats?
Leaning into hydration and skipping harsh actives on heavy-sweat nights is a sensible, low-effort adjustment. You don't need an entirely new routine — just a gentler, more hydrating version of what you already do.
Are postpartum night sweats linked to breastfeeding?
They can be, since breastfeeding keeps some hormones elevated for longer. This is one reason some mums find night sweats persist a bit longer while they're feeding than they otherwise would.
Where to Start
For skin that's taking a hit from disrupted, sweaty nights, I'd reach for The Overnight Recovery Kit ($144) — it's built to top up hydration while you sleep. If your main issue is more general sensitivity than dehydration, The Barrier Repair Set ($188) is the better fit. Have a browse of the full collection for other options.
Edwina x
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