We use cookies for certain features and to improve your experience. See our Cookie Policy and Privacy Policy to learn more

Leafly

Shop legal, local weed.

Open
advertise on Leafly
ShopDeliveryStoresDealsStrainsBrandsProductsLeafly PicksDoctorsCannabis 101Social impact
  • Sign in
  • Create account
  • Strains
  • Shop
  • Shop
  • Delivery
  • Deals
  • Stores
  • Brands
  • Products
  • Leafly Picks
  • Learn
  • Cannabis 101
  • News
  • Leafly Learn
  • Science of cannabis
  • Doctors
  • Social impact
  • Lab partners
  • Download the Leafly App
  • Advertise on Leafly
    • Leafly.comUSA flag
    • Leafly.caCanadian flag
  • Help
  1. Home
  2. News
  3. Science & tech
  4. What is cold-start or reverse dabbing?
  • News
  • Lifestyle
  • Strains & products
  • Industry
  • Growing
  • Health
  • Science & tech
  • Leafly USA
  • Podcasts
  • Learn
Science & tech

What is cold-start or reverse dabbing?

Patrick BennettLast updated July 9, 2021
Oil for dabs is extracted from dried marijuana flowers
(Julia Sumpter/Leafly)

Cannabis concentrate enthusiasts likely are familiar with low-temperature dabbing. With reduced temperatures and a cooler nail surface, you’re able to preserve the flavors and terpenes in your dabs.

Traditionally, low-temp dabs are achieved by pre-heating a nail and loading concentrates onto that nail. But instead, you can load concentrates onto a cold nail first and then slowly heat it.

Proponents of this method call it “cold start” or “reverse” dabbing, or even “dabbing cold,” and this technique is gaining popularity.

Methods for heating preloaded concentrates on a cold surface have been around for a while—health stone dabbing, in which concentrates are loaded onto a porous stone in a nail, was a trend before quartz nails and low-temperature dabbing even existed.

Cold start dabbing takes this same concept and reformats it for a new generation of dabbers who have moved on to better technology, especially with the use of quartz and borosilicates.

How to cold start dab

How to reverse dab

(Julia Sumpter/Leafly)

To achieve a proper cold start dab, you’ll need a nail, preferably a banger. The bucket design of bangers allows for a more even distribution of heat, which is imperative when trying to warm concentrates on a cold surface. A standard quartz or ceramic banger will do, or even a thermal nail.

Once you have your dab gear, load your concentrate into the banger or nail. The nail must be clean, as you don’t want to torch any residuals that have caked onto the surface from previous dabs.

Once loaded with concentrate, apply the carb or bubble cap to the nail. Ignite your torch and slowly heat the underside of the nail with the flame several inches away. The idea is to bring the heat up to a temperature where the concentrate begins to bubble and turn into a vapor. Typically, this takes less than 10 seconds.

At this point, power down the torch, rotate the cap to create convection, and inhale. Depending on the amount and type of concentrate loaded, you should get 1-2 pulls, with a more flavorful initial pull.

Benefits of cold-start dabbing

Cold start dabbing is great for people who wish to achieve a flavorful low-temperature pull without having to wait for the nail to heat and cool after each hit. It’s great if you’re pressed for time.

Shop highly rated stores near you

Showing you stores near
See all stores
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • See all stores
See all stores

Dabbing cold will also preserve your hardware better than traditional dabbing techniques. By subjecting your nail to less heat, you reduce the potential for breakage and residual buildup. Quality quartz nails and borosilicate directional caps aren’t cheap and can break easily.

The cons of dabbing cold

Dabbing cold can waste concentrates, as some material can be left in the nail after a hit. This char and residue should be removed and disposed of, so that you start your next dab on a clean surface and can get its authentic flavor profile.

This method isn’t conducive to taking more than one dab in a session, which can be frustrating if you plan to share your rig with friends or want to load up more concentrates. The time saved by cold start dabbing is essentially wasted when you have to wait for the nail to fully cool in order to clean it.

Ideally, cold start dabs are best when using borosilicates, but this type of hardware can be expensive and needs care. Dabbing cold is great if you’re strapped for time and want a flavorful single pull without having to stop and wait, and if you want to preserve the flavors of your concentrate.

Related Stories

Shop highly rated stores near you

Showing you stores near
See all stores
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • Loading...
    Loading...Loading...
    Loading...
    Loading...Loading...
    Loading...Loading...
  • See all stores
See all stores
dabbing
Patrick Bennett
Patrick Bennett
Patrick lives with his wife and daughter in Denver, where he spends his time writing, photographing, and creating content for the cannabis community.
View Patrick Bennett's articles

The latest in Science & tech

  • Researchers say cannabis may help treat Covid-19 image
    Researchers say cannabis may help treat Covid-19
    Emily Earlenbaugh
  • Weed & exercise Part III: Can cardio make you fail a drug test? image
    Weed & exercise Part III: Can cardio make you fail a drug test?
    Nick Jikomes, PhD
  • How THC impacts your heart, lungs & exercise performance image
    How THC impacts your heart, lungs & exercise performance
    Nick Jikomes, PhD
  • Here’s the euphoric chemistry behind your runner’s high image
    Here’s the euphoric chemistry behind your runner’s high
    Nick Jikomes, PhD
Get good reads, local deals, and strain spotlights delivered right to your inbox.

By providing us with your email address, you agree to Leafly's Terms of Service and Privacy Policy.



Stay In Touch

Receive updates on new products, special offers, and industry news.

Something went wrong, please try again.

By providing us with your email address, you agree to Leafly’s Terms of Service and Privacy Policy.

Leafly mobile app
Get high for less.
Download the Leafly app.
Download Leafly: Marijuana Reviews on the App StoreDownload Leafly Marijuana Reviews on Google Play

Business Solutions
  • List your store
  • List your brand
  • Lab partners

About Leafly
  • About us
  • Careers
  • Newsroom
  • Investor relations
  • Contact us
  • FAQs
  • Accessibility

Stores in
  • British Columbia
  • Ontario
  • Alberta
  • Saskatchewan
  • Manitoba
  • Prince Edward Island

Privacy & Terms
  • Terms of use
  • Commercial terms of use
  • Privacy policy
  • Do not sell my personal information

The material provided on Leafly is intended for educational and informational purposes only. Leafly is not engaged in rendering medical service or advice and the information provided is not a substitute for a professional medical opinion. If you have a medical problem, please contact a qualified health professional.


© 2025 Leafly, LLC
Leafly and the Leafly logo are registered trademarks of Leafly, LLC. All Rights Reserved.