🏆 Best deal right now
EIGHTH DAY doesn't discount individual products. The savings sit entirely in the multi-product collections, where buying the set costs less than the pieces, and the mini collection is the deepest cut on the site at 33%.
Shop the Collection →EIGHTH DAY is a clinical skincare line priced accordingly, with single treatments running into the hundreds. Nothing in the individual product range is marked down, and there's no sitewide sale, but working promo codes turn out to be plentiful.
What does exist is a set of ten pre-built collections and duos priced below the sum of their parts. We checked every one against its own original price: they run from 12% to 33% off, and that's the whole discount structure. The only other saving is 15% off a first order for joining the mailing list.
Active EIGHTH DAY deals
EIGHTH DAY advertises this one openly. The codes below do the same job or better, and nine of the ten we tested worked. Everything else requires buying a collection.
The Regenerative Mini Collection: was $180, now $120, a saving of $60. At a third off it's both the steepest discount and the lowest entry price on the site.
The Illuminative Collection: was $460, now $350, a saving of $110.
The Day To Night Duo: was $740, now $640, a saving of $100.
The Signature Collection Lift and Tighten: was $850, now $750, a saving of $100. The dollar figure matches the Day To Night Duo, but on a bigger basket.
EIGHTH DAY promo codes reported online
15%OFF
✓ Verified Sep 515% Off Your OrderCart-tested today on a $50 full-price product: it came out at $42.50, a clean 15%.
DECODEVerified in cart at 15% off.Reveal code →
15%OFF
REALRESULTS15Verified in cart at 15% off.Reveal code →
15%OFF
WELCOME15Verified in cart at 15% off.Reveal code →
15%OFF
TIMELESSVerified in cart at 15% off.Reveal code →
15%OFF
NAMVOVerified in cart at 15% off.Reveal code →
10%OFF
REGENERATEVerified in cart at 10% off.Reveal code →
10%OFF
CLEANSCIENCEVerified in cart at 10% off.Reveal code →
10%OFF
REALRESULTS10Verified in cart at 10% off.Reveal code →
15%OFF
⚠ Unverified15% Off CodeCirculating online · Unverified, test it at checkout
BETTERSKINRejected in our cart test, listed for completeness.Reveal code →
The Signature Treatment for Fine Lines and Wrinkles: was $560, now $490, a saving of $70.
How to get the best price at EIGHTH DAY
1
Join the mailing list first
15% off a first order is the discount EIGHTH DAY advertises, but several codes below match it without the signup. Use it on the thing you actually want, not on a set.
2
Compare the set against the singles
Every collection is cheaper than its parts, but only by 12% to 33%. Work out whether you'd use all of it before treating that as a saving.
3
Start with the mini collection
At $120 from $180 it's the deepest discount and the cheapest way to find out whether the line suits you.
4
Use a code instead of waiting for a sale
There's no sitewide sale and no outlet. The collections are the permanent discount mechanism, and the codes below sit on top of them.
💡 Two of the ten reduced items are the same Day To Night Duo listed under different handles at the same price. Ten reduced listings is closer to nine distinct products.
About EIGHTH DAY
EIGHTH DAY is a clinical skincare brand founded by a Beverly Hills dermatologist, built around a proprietary regenerative complex and sold as targeted treatments rather than a broad range.
Prices run from $120 for the mini collection to $850 for the full signature set, which puts it firmly in the professional tier and explains why the discounting is structural rather than seasonal.
EIGHTH DAY promo code FAQ
Does EIGHTH DAY have a promo code?›
Yes, and more than the brand lets on. We cart-tested ten codes today and nine worked: DECODE, REALRESULTS15, WELCOME15, TIMELESS and NAMVO each took 15% off, and REGENERATE, CLEANSCIENCE and REALRESULTS10 took 10%. The collection pricing is separate.
Why aren't individual products discounted?›
EIGHTH DAY holds price on singles. The savings are structural: pre-built collections and duos are priced below the sum of their parts, from 12% to 33% off.
What's the biggest EIGHTH DAY discount?›
33% off The Regenerative Mini Collection, $180 down to $120. It's also the cheapest product on the site.
Does EIGHTH DAY have a sale or outlet section?›
There's a final-sale collection, but the active discounts all sit in routines and sets. There's no seasonal sitewide sale.
Is the mini collection worth it over a full-size product?›
As a way in, yes. It's a third off and it's the only sub-$150 entry point in a line where a single treatment can cost $560.
The Bottom Line
EIGHTH DAY looks like a hold-price brand until you test the codes. The collections genuinely cost less than their contents, worth between 12% and 33%, and the mini collection at $120 from $180 is the best of those. But nine separate codes also worked in our cart, at 15% and 10%.
Take the 15% first-order discount on whatever single product you actually want, and treat the sets as a saving only if you'd have bought every piece anyway.
Similar brands
Dr. Dennis GrossSkincare
The closest clinical comparison, and a brand that runs genuine seasonal sales rather than set-only pricing.
See Dr. Dennis Gross deals →Crème de la MerSkincare
Same premium tier and the same refusal to discount singles, which makes its sets the only route to a lower price.
See Crème de la Mer deals →DefenAgeSkincare
Another dermatologist-founded regenerative line sold mostly as multi-step regimens.
See DefenAge deals →DermstoreBeauty Retailer
Stocks clinical brands across the category and discounts far more often than any of them do directly.
See Dermstore deals →
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