Reed Diffuser Base - CandleScience
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3+ 25 lb Pails $201.60 $0.50 /oz
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Reed Diffuser Base is a liquid you mix with fragrance oils to make reed diffuser oils. It makes fragrance thinner, or less viscous, so that it flows up the reed easily.

Please note that not every fragrance is compatible with a given reed diffuser base. We test every single one of our fragrances in our base, and list the compatibility on individual fragrance pages. Use our Fragrance Finder tool to easily find compatible fragrances to use with the diffuser base.

Are all Reed Diffuser Bases the same?
Absolutely Not! There are two big things to watch for:

1. Safety - When we first saw the popularity of Reed Diffusers, we got excited. But when we studied them, we found safety issues that weren't being handled in a way we felt good about. Turns out lots of bases have high levels of VOC's in them. VOC's or Volatile Organic Compounds are compounds that are harmful and create indoor air quality problems. You can find out more about it at the EPA's VOC page. We weren't willing to offer a base classified as a VOC, and it turns out lots of states (CA, MD, PA, NY, ME, DE, NJ, DC) have made strict rules about them. This product does not contain DPG.

The bottom line is - make sure that you are using a diffuser base that is VOC compliant, especially if you live in the states above. Rest assured that our base is totally safe and has no VOC restrictions in any state.

2. Flow - The other important aspect we encountered in testing and formulating a reed diffuser base is its ability to move up the reed easily. We've seen products that take days to reach the top. Many people take shortcuts like flipping the reeds to quickly wet both sides, but we've found that the best fragrance throw is achieved with a base that flows through the reed.


Watch our quick guide to learn how to create reed diffusers with candlescience diffuser base. Watch Now >

Vanillin Content 0%
Prop 65 Warning Required No
Pdf msds

Average Rating:

(based upon 20 reviews)

Love this base, but new 5lb jug design please!

As with all CS products that I’ve used, this diffuser base is fantastic quality and I appreciate their attention and dedication to creating healthier fragrance oils and bases. I use the diffuser base at a 3:1 ratio and it works perfectly every time, without being too overbearing in small spaces.

My only issue is the square-ish topped detergent style jug used to ship the 5lb diffuser base. It’s difficult to open at first (and I’m strong), plus when you need to turn the jug fully upside down to get out those last few ounces, the liquid gets trapped in the square top of the jug and will literally spill out everywhere due to the detergent style large spout. The 5lb jug would be a much better product if shipped in a more simple and straight sided jug.

Very Good Diffuser base

I have been buying this diffuser base for 5 years and I can say it is one of the best you can get out there. I mix 1:4 FO:DB and works perfect. I cant keep up with demand for reed diffusers. However, I found out that not all approved fragrance oils diffuse well. You have to do your test before you roll out. But the good ones are really good. Try Bamboo and Coconut, Honeysuckle Jasmine, Pineapple sage. However, I wish there was still bulk discount for the jugs not only the pail because I am scared to order the pail because of spillage during shipping.

Waste of money

I followed the instructions as perfectly as possible. My reed diffusers hardly give off a scent. Not more that a couple inches from the jar. I used a 3:1 ratio of diffuser base to fragrance oil. I used one of their approved scents. I even emailed customer service. They suggested adding more reeds up to 12 which I had already done didn't work. They also suggested flipping the reeds. Which I did. It did increase the scent slightly. Definitely didn't come close to filling the room. One week later and still barely smelling the fragrance oil. What a disappointment.

great product

I use this base in our car diffuser fragrance oils and it's great. candlescience fragrances are wonderful to start with, adding them to diffusers has made a lot of my customers happy. The only drawback that I have found so far is that many fragrance oils are not compatible.

Please Test Before Selling Or Gifting

I made my first diffuser for my grandmother following the 3:1 (base to FO) ratio that Candle Science suggests. I then placed 5 reeds in the solution. After a few hours the scent made its presence known. Then I thought it would be a good thing to give to my grandmother who has poor vision. I’d tried candles, but I could only burn them while I was there. I figured she’d neglect a melter and that could present a fire hazard. I also considered placing strong candles in different rooms using the CT to odorize her home, but I want to sell my candles. So a diffuser seemed like a sound option.

I proudly delivered the diffuser and set it up with 5 reeds in a room adjacent to her kitchen. An hour or two more passed and the scent was so strong that I could hardly stand stand breathing without covering my face with my hood while sitting in the next room. I asked her if the scent was too strong for her and she replied “no.” I stayed for a couple of hours and asked a couple of more times. She hadn’t been affected as I had. Over the next couple of days I called and checked with her to see if the scent had become too overwhelming. Again she rejoined, “no.” After three days I called and she informed me that she woke up, opened her bedroom door and was confronted by an invisible yet powerfully odiferous assailant; In her words, “Baby, it lit up the whole house!” She also informed me that she removed the reeds, wrapped them in plastic and placed a jar over the diffuser bottle, but they were where I’d placed them initially. After her complaint I had intended to adjust the solution, but by the time I’d returned she’d replaced a single reed and the room smelled wonderful. I’m glad she didn’t toss the product. Now, before some of my fellow craftsmen and women start judging and/or castigating me, I will say this — I chose to test it with her because she is unable to air her home out without assistance and wanted to freshen up the air. On that note and in the words of President G.W. Bush, I say, “Mission accomplished!”

Here’s what I learned: One reed people! It was a small room (and I wish I knew the exact dimensions), but one reed was sufficient at a 3:1 ratio. This occurred using a light spa-type FO purchased from this site. I will have to try a 4:1 ratio as MB suggested in their review.

Love Candle Science!
Just curious, what kind of containers does everyone use for the reed diffusers?

Reed Diffuser Bade

I love it this product but can I use it with essential oils?

NEW, to ordering oils

What is a base? Also how do I make the oils safe for skin?

Works every time!!

Use 4 parts of base to 1 part of fragrance. If using Candlescience fragrances, it will work every time (as long as they say it is compatible). If using another company's fragrance, just test it. You can use as many reeds as you want, but we use 8 - 10 for everyone we sell.


How many Reeds should you to use in the 4 oz. oil? I am a newbie and have lots of questions. I do think I am going to make these as gifts, along with my candles and soaps. These look amazing! Thanks

Reed Diffuser Oil Base

I am wondering if after mixing fragrance with diffuser is there a time period to cure, or does it work shortly?

Appropriate for Incense Sticks?

Has anyone used this base with oils to make incense sticks?


I used this for the first time with some fragrance oils and have had amazing results.


I have a question, once you have your base and oil mixed together can you put the mixture in plastic bottles? I am new at making the reed diffusers, I have always seen them in glass jars in the stores. So just wanted to find out if plastic can be used to store the already made up mixture.


Can I use Essential oils instead of your fragrances in the bottle

Great product!

I purchased the 80 oz. size and was able to get 17, 6 oz., bottles of diffusers out of it. I used a 5/1 ratio and that worked out well. I'm hoping all of the CS f/o's will be compatible soon so I can make the diffusers in the same scents as my soy candles.

Great results

I made my first Reed Diffuser today using Sunwashed Linen. I used 3 ounces of diffuser base and 1 ounce fluid. It smells clean and a nice level of fragrance for our bathroom. Though this worked well, I still have questions before I jump in with both feet. Can you use any fragrance oil from Candle Science? Looking for some more feedback from others too. Thanks for posting all your reviews!

My formula is 3 to 1 as suggested. Works great and easy to remember!

Forgot to add

I used 10 reeds in my diffuser bottle :)

Good stuff!!

I'm still learning about reads and base and stuff but.. I made a diffuser today and it's working very well. I used 6oz of base and 1oz of fragrance oil (Love Spell) and it's potent! My office smells great! It says you can use 3oz of diffuser and 1oz oil but I think it would be too strong. 6oz base to 1oz fragrance is perfect. Can't wait to make more diffusers.