How to use DUO promo codes

1. Go to duobeauty.co.uk then select the items you wish to purchase and add them to your shopping cart.
2. Find a promo code on this page. Click to open the code, then click "copy" to copy the coupon code to your clipboard.
3. Go back to duobeauty.co.uk and proceed to checkout. Look for the box labeled "Enter promo code" and paste your promo code in that box.
4. Once you apply the promo code, your savings should be applied, and you can complete checkout.

Promo code didn't work? Read these expert tips.

• DUO offers promo codes often. On average, DUO offers 27 codes or coupons per month. Check this page often, or follow DUO (hit the follow button up top) to keep updated on their latest discount codes.
• Check for DUO's promo code exclusions. DUO promo codes sometimes have exceptions on certain categories or brands.
• Look for the blue "site-wide" label for site-wide DUO promo codes. Site-wide codes can be applied to any item on DUO's website, and therefore are the most useful codes.
• Read our expert guide to finding promo codes for stores that rarely offer them.