Rainbow Labs
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About Rainbow Labs
Rainbow Labs's coupon activity varies week to week, which is the whole reason this page exists instead of a static list.
Seasonal promotions at Rainbow Labs rotate quickly, which is why this code gets checked regularly rather than left to go stale. New-customer-only restrictions are common at Rainbow Labs, so existing account holders should check for a separate returning-customer offer.
Couponarc rechecks Rainbow Labs periodically, so a code that's expired today may be replaced again soon.
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Frequently asked questions
How do I use a Rainbow Labs promo code?
Copy the code from any offer above, then paste it into the promo code or discount field during checkout at Rainbow Labs. Codes are checked before they're published, but retailers can end a promotion at any time — if one doesn't apply, try another code on this page.
Can I use more than one code on the same order?
Generally, no. Rainbow Labs, like most stores, caps checkout at a single promo code — trying to stack a second one usually just gets ignored.
Who verifies Rainbow Labs's codes?
Fiona Clarke, Shopping Advisor, covers Rainbow Labs on Couponarc — codes are checked before publishing, not just scraped from somewhere else.
See Fiona Clarke's full profile ›
See Fiona Clarke's full profile ›
How often are Rainbow Labs codes updated?
This page is checked periodically rather than on a fixed schedule — codes that stop working get flagged and removed, and new ones get added as they're found.