healthy underwear is the new skincare
The fabrics you wear matter more than you think. Most underwear is made from petroleum-based synthetics that trap heat and disrupt your skin's natural balance. Ours isn't.
see what's different
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Tree-derived, not petroleum-based
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Extra-long gusset for all-day freshness
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Antimicrobial protection
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Gynaecologist-designed
The Underdays Starter Kit
$93.00
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Made for your most delicate skin
The skin down there is up to 10x more permeable. Our TENCEL Modal comes from trees, not the petroleum-based synthetics in most underwear.
Freshness that lasts all day
An extra-long antimicrobial gusset keeps you dry, protected and comfortable from morning to night. Breathable, reliable coverage that keeps distractions at bay.
Built with a gynaecologist
Designed to support your intimate skin's natural pH balance. Every detail — from fibre choice to fit — was developed alongside a practising gynaecologist.
Inside the Starter Kit
EXCLUSIVE OFFER - £36 OFF
A Better Foundation
3 pairs of pH-balanced, tree-derived underwear that replace the synthetics sitting against your most sensitive skin. Plus our Scuba Cloud Pouch (worth £30) included free. All for £48 — you save £36.
for daily comfort
The Everyday
Stays dry for up to 12 hours. Twice as soft as cotton. Minimal VPL with a cross-over waistband that flatters every body — because healthy underwear shouldn't mean compromising on style.
FOR YOUR ESSENTIALS
The Scuba Pouch
Your complimentary travel pouch. Super-soft, ultra-light, with an internal divider and monogram zip. Included with every Starter Kit.
