$5 off UV Screw‑top 420 Jars
Get $5 off when you purchase select UV Screw‑top 420 Jars and your order totals at least $70.
420 Science Promo Codes and Coupons November 2026
420 Science
420science.comWhen shopping at 420 Science, compare product prices and any available promotions to decide if a deal meets your needs.
48
Offers to explore
2252
Recorded uses on shown offers
Oct 27, 2026
Latest recorded code success
420 Science coupons & offers
15% off
Last success Oct 27, 2026
15% Off (Storewide) at 420 Science
- Storewide offer; check exclusions
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 3
- Recorded successes
- 3
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
20% off
1,181 recorded usesLast success Jul 29, 2026
20% Off Select Items at 420 Science
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 114
- Recorded successes
- 110
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
Free gift
631 recorded usesLast success Aug 4, 2026
Free Gift Storewide (must Order 2) at 420 Science
- Storewide offer; check exclusions
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 108
- Recorded successes
- 105
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
$15 off
358 recorded usesLast success Jul 31, 2026
$15 Off X-large Uv Screw-top - 420 Cat at 420 Science
- Applies to: Select items
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 104
- Recorded successes
- 104
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
25% off
15 recorded usesLast success Jul 11, 2026
Score 25% off with promo code
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 10
- Recorded successes
- 3
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
20% off
14 recorded usesLast success Nov 2, 2025
20% Off Storewide at 420 Science
- Storewide offer; check exclusions
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 7
- Recorded successes
- 4
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
30% off
11 recorded usesLast success May 10, 2026
Score 30% off with promo code
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 13
- Recorded successes
- 6
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
25% off
11 recorded usesLast success Feb 27, 2026
25% Off Storewide at 420 Science
- Storewide offer; check exclusions
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 12
- Recorded successes
- 3
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
5% off
9 recorded usesLast success Oct 10, 2026
5% Off Select Items at 420 Science
- Applies to: Select items
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 62
- Recorded successes
- 62
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
25% off
8 recorded usesLast success Jan 2, 2026
Score 25% off with coupon
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 10
- Recorded successes
- 3
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
10% off
5 recorded usesLast success Aug 8, 2026
Get 10% off with coupon code
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 2
- Recorded successes
- 2
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
15% off
5 recorded usesLast success Jan 31, 2026
15% Off Gummies at 420 Science
- Applies to: Select items
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 10
- Recorded successes
- 2
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
25% off
4 recorded usesLast success Jun 23, 2026
Save 25% off with code
Offer history & confidence
Success recorded · (UTC).
- Recorded checks
- 10
- Recorded successes
- 2
Report totals use the most recent vote per anonymous reporter record. Recorded checks and successes can already include Terra reports; these totals should not be added together. Past results depend on the basket and offer terms.
Showing a selection of recorded offers. Read the conditions and check the final basket total before placing an order.
The recorded picture
Offer activity over time
These are additions to Terra and shopper report events, not merchant launch dates or a history of checkout prices. Months use UTC; the latest month may be incomplete.
Offers added to TerraTerra reports
View monthly counts
| Month | Offers added to Terra | Terra reports | Success | Did not work |
|---|---|---|---|---|
| Dec 2025 | 0 | 0 | 0 | 0 |
| Jan 2026 | 0 | 0 | 0 | 0 |
| Feb 2026 | 0 | 0 | 0 | 0 |
| Mar 2026 | 0 | 0 | 0 | 0 |
| Apr 2026 | 0 | 0 | 0 | 0 |
| May 2026 | 0 | 0 | 0 | 0 |
| Jun 2026 | 0 | 0 | 0 | 0 |
| Jul 2026 | 0 | 0 | 0 | 0 |
| Aug 2026 | 0 | 0 | 0 | 0 |
| Sep 2026 | 0 | 0 | 0 | 0 |
| Oct 2026 | 0 | 0 | 0 | 0 |
| Nov 2026 | 18 | 0 | 0 | 0 |
Make the most of your order
How to save at 420 Science
Compare the offer terms with what is in your basket. A bigger advertised discount may cover fewer items or require a higher spend.
25% off select items
You can receive a 25% discount, but it is limited to select items only.
Buy‑1‑Get‑1 with 50% off on select items
During the Cyber Week Sale you can buy one eligible item and get a second eligible item at half price. Only items designated as “select items only” qualify for this offer.
25% off plus free shipping on everything
You can get a 25% discount on your purchase and free shipping, with the offer applying to everything as stated.
Store guide refreshed Nov 1, 2026. Offer conditions can change; check the details before shopping.
- Check minimum spend and excluded products before choosing an offer.
- Compare shipping charges with the discount to see the final saving.
- Check whether the offer requires a new account, membership, or a particular country.
- Keep your basket total in view when comparing a code with an automatic sale.
How to use a 420 Science coupon
- Choose an offer above and read its conditions. Copy the code if one is provided.
- Open 420 Science and add eligible items to your basket.
- For a code offer, look for a promo-code or discount field in the basket or checkout and apply the code. No-code offers may apply automatically; follow the offer instructions.
- Check the discount, delivery cost, and final total before paying.
Why might a 420 Science code not work?
A code can fail because it has expired, has already been used, excludes your items, needs a minimum spend, or is limited to a particular account or country. Check the offer details, remove extra spaces, and confirm whether another promotion is already applied. Try a different offer if the conditions do not match your order.
A past success is a useful signal, not a guarantee for every basket. After trying an offer, share whether it worked to help other 420 Science shoppers.
About the offer information
Terra lists available offer information and recorded code activity. Our directory contains 48 code offers and 0 no-code offers for 420 Science; older offers may no longer apply. The offers shown above are a selection. An offer's conditions and the merchant's checkout determine eligibility.
Terra may earn a commission when you buy through a merchant link.
Explore more in these categories
Stores like 420 Science
10% off
ZYN
10% Off Select Items at ZYN
15% off
Everything For 420
15% Off Storewide at Everything For 420
20% off
Nicokick
20% Off Storewide at Nicokick
$1500 off
GMKtec
$1500 Off Storewide at GMKtec
20% off
Badass Glass
20% Off Storewide at Badass Glass
10% off
Famous Smoke Shop
10% Off Storewide (minimum Order $10) at Famous Smoke Shop
About 420 Science
FAQs
- 10% Off Select Items at ZYN. Check out their ZYN coupon codes
- 15% Off Storewide at Everything For 420. Check out their Everything For 420 coupon codes
- 20% Off Storewide at Nicokick. Check out their Nicokick coupon codes
- $1500 Off Storewide at GMKtec. Check out their GMKtec coupon codes
- 20% Off Storewide at Badass Glass. Check out their Badass Glass coupon codes
- 10% Off Storewide (minimum Order $10) at Famous Smoke Shop. Check out their Famous Smoke Shop coupon codes
The discount applies only to select UV Screw‑top 420 Jars and requires a minimum order value of $70.
The discount applies only to select items as specified by the offer.
Only the specific products listed as “select items only” under the Cyber Week Sale qualify; all other items are excluded.
The offer specifies 25% off plus free shipping on everything.
Our directory has 48 code offers and 0 no-code offers for 420 Science. This includes older records; check the conditions and recent activity on each offer before shopping.
Stacking rules depend on the offer. Read the terms and compare the final basket total after applying a code. Do not assume a code combines with sale prices or another promotion.
Check 420 Science's official website for delivery charges, return windows, exclusions, and regional terms before paying. Offer-specific details shown here may have additional conditions.
The Terra shopping guide
Offer information, shopping tips, and community reports to help you compare savings.
Shopping guide
From the blog
How to Negotiate Lower Bills on Subscriptions and Monthly Services
Effective strategies to reduce your subscription and monthly service bills through negotiation, smart planning, and leveraging available tools.
Unlock Huge Savings: Get the Best Soundboks Discount Today!
Unlock Huge Savings: Get the Best Soundboks Discount Today! Discover eco-friendly ways to save big on Soundboks speakers, find refurbished deals, and shop smartly!
The Best Time to Buy Electronics, Clothes, and More: A Year-Round Savings Calendar
Learn the best months to buy electronics, clothes, home goods, and more for maximum savings.