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Cos promo codes
cos.com
11 active codes. Largest discount listed: 25% Off. Reviewed between May 2026 and Sep 2026. No shopper has reported back on these yet.
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Today's Top Code
Most recently added. That is about how much we know about this code, not about it being the biggest saving.
15% off
special offer
MAY15Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Oct 7, 2026, 3 days leftReviewedSep 2026
All Cos codes
Showing all 10 codes.
15% Off
SEARCH15Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 28, 2026ReviewedMay 2026
25% Off
BARABASVIPGet codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 31, 2026ReviewedMay 2026
15% off
MAGIRI15Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 31, 2026ReviewedMay 2026
15% off
MEMBERSONLYGet codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 31, 2026ReviewedMay 2026
10% Off
TAKE10OFFGet codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 28, 2026ReviewedMay 2026
15% off
CRTP6Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 31, 2026ReviewedMay 2026
10% Off
SIGNUPGet codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 28, 2026ReviewedMay 2026
10% Off
NT20Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 28, 2026ReviewedMay 2026
15% Off
2X9MGP2Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 28, 2026ReviewedMay 2026
10% off
CARLOSN10Get codeCopies the Cos code and opens Cos in a new tabVisit Cos, opens the retailer in a new tabGet code copies the code and opens Cos in a new tab.
Expires Dec 31, 2026ReviewedMay 2026
About Cos
Most Cos codes here are percentage discounts. Browse more Beauty coupons, or see every store we carry.
How to use a Cos code
- Press Get code. That copies the code and opens Cos in a new tab. If you only want the code, use Copy code once it is showing.
- Fill your basket at Cos as normal.
- At checkout, find the promo or discount code box, paste the code and apply it. Check the total actually changed before you pay.
Questions about Cos codes
- How do I use a Cos promo code?
- Press Get code on the code you want. That copies it and opens Cos in a new tab. Fill your basket, then paste the code into the promo code box at checkout and apply it. Check the total actually changed before you pay. If you only want the code, Copy code copies it without opening anything.
- Does Cos have a first-order discount?
- None of the Cos codes we hold are marked as first order or new customer only. That does not rule one out, it just means no code we have states it.
- Why did a Cos code not work?
- Most often the basket does not meet a condition attached to the code, such as a minimum spend or a first-order restriction. Any condition the store stated is shown on the code. Stores can also switch a code off without notice.
- How do I report a code that did not work?
- Open "Details and terms" on that code and answer the "Did this code work?" question. That feedback is what the shopper-confirmed labels on this page are built from.
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