Home Cosmetic Science Talk Formulating General homogenizer or stirrer for small business starting out?

  • homogenizer or stirrer for small business starting out?

    Posted by domicanica on September 9, 2020 at 4:57 am

    hello all. i’m in the process of doing research to start a small bath and body care company. i’ve done my ingredient research and i’m just about ready to begin purchasing raw materials to start playing around and formulating.

    i’ve done some research (read the “setting up a cosmetic formulating lab” series and discussions on here, looked at blogs etc) but i’m still a bit lost as it relates to equipment, specifically stirrers/homogenizers. to start i’ll be making body wash and body lotion and i’m not sure if i need an overhead stirrer, homogenizer or both. the way i understand it, most overhead stirrers have adjustable speeds and can do high shear AND low shear mixing but a homogenizer can only do high shear mixing so i’m better off with the stirrer, is this correct?

    as i start experimenting i’ll probably be working in small batches of maybe 200mL the most, until i’m satisfied with my base formula. should i use an immersion blender until i’m ready to scale up?

    i’ve seen some overhead stirrers i think i like but i’m not sure what i’m supposed to be looking for in the first place, so if anyone has any advice, opinions or product recommendations they’d like to share i would love to hear them. i live in the caribbean so the easiest way for me to get things here is to purchase from US sites/companies and use a freight forwarder. paying freight and taxes can be expensive therefore my budget right now is $250. i do have amazon prime so recommendations from amazon are very welcome. thank you.


    catanasio replied 3 years, 3 months ago 12 Members · 46 Replies
  • 46 Replies
  • Sponge

    Member
    September 9, 2020 at 5:46 am

    You definitely want a stirrer before a homogenizer. You’d have to tell us what you intend to make before us being able to recommend a homogenizer or not. 

    Sorry, I’m not help with equipment suppliers. 
  • Graillotion

    Member
    September 9, 2020 at 5:58 am

    Take a look at this one:
    https://www.katom.com/048-MX07015.html

    The beauty of this one…is that it has the biggest range of speeds…infinite adjustment from 0 rpm to 13,000 rpm…..so it can both emulsify and stir, unlike the cheapies on Amazon….which the lowest speed is well beyond the realm of stirring.
    Very heavy duty and high quality.

    Regarding which is more important… emulsifier vs stirrer….I think this question can only be answered based on which emulsifiers you intend on using!

    Note…I have the above machine…and could not be more tickled with it….after burning through 3 of the Amazon types…hehehe.

  • Pattsi

    Member
    September 9, 2020 at 11:35 am

    an overhead stirrer will do if you can find it within $250.
    a stick blender is cheaper might be a good starter and then get a stirrer when you have more experience. 

    when i make test batch at home 100-200 i do stick blender and cool down by hand, 300-1000 i do overhead stirrer. if the formulae is too complicated or need a homogenizer i hand it over to professional formulator. 

  • domicanica

    Member
    September 9, 2020 at 12:36 pm

    Sponge said:

    You definitely want a stirrer before a homogenizer. You’d have to tell us what you intend to make before us being able to recommend a homogenizer or not. 

    Sorry, I’m not help with equipment suppliers. 

    I’ll be making body wash and body lotions, thought I put that in the post sorry

  • domicanica

    Member
    September 9, 2020 at 12:42 pm

    Take a look at this one:
    https://www.katom.com/048-MX07015.html

    The beauty of this one…is that it has the biggest range of speeds…infinite adjustment from 0 rpm to 13,000 rpm…..so it can both emulsify and stir, unlike the cheapies on Amazon….which the lowest speed is well beyond the realm of stirring.
    Very heavy duty and high quality.

    Regarding which is more important… emulsifier vs stirrer….I think this question can only be answered based on which emulsifiers you intend on using!

    Note…I have the above machine…and could not be more tickled with it….after burning through 3 of the Amazon types…hehehe.

    the dynamic mini pro? yes i was looking at this one as a “starter” for now, thanks for the rec and review!!!

    emulsifier vs stirrer depends on which emulsifier i want to use and thats because some ingredients just don’t stand up to high shear mixing which is what the emulsifier would do right?

  • domicanica

    Member
    September 9, 2020 at 12:51 pm

    Pattsi said:

    an overhead stirrer will do if you can find it within $250.
    a stick blender is cheaper might be a good starter and then get a stirrer when you have more experience. 

    when i make test batch at home 100-200 i do stick blender and cool down by hand, 300-1000 i do overhead stirrer. if the formulae is too complicated or need a homogenizer i hand it over to professional formulator. 

    this sounds like it might be the way to go. which stick blender do you use?

  • Pattsi

    Member
    September 9, 2020 at 3:06 pm

    this sounds like it might be the way to go. which stick blender do you use?

    I use a Chinese (or Japanese) one i don’t know the name, bought it from liqour store about $30 i think. 

    if you want a high quality one you have to go with one Graillotion suggest above.

  • Graillotion

    Member
    September 9, 2020 at 6:13 pm

    The biggest functional difference between the cheap stick blenders….and the Mini-pro….is the ability to adjust speed.  None of the cheap ones that I burned through….could operate slowly.  Their slowest setting was faster than I often wanted in certain situations.  
    The other thing….as I burned through 3 of them in about 9 months….they actually ended up being no cheaper….than one good one.  :) 

    You can not measure cost…when you need to slowly stir air out of your emulsion towards the end.

  • domicanica

    Member
    September 9, 2020 at 6:57 pm

    The biggest functional difference between the cheap stick blenders….and the Mini-pro….is the ability to adjust speed.  None of the cheap ones that I burned through….could operate slowly.  Their slowest setting was faster than I often wanted in certain situations.  
    The other thing….as I burned through 3 of them in about 9 months….they actually ended up being no cheaper….than one good one.  :) 

    You can not measure cost…when you need to slowly stir air out of your emulsion towards the end.

    oooh okay, i see. i think i’ll end up going with this one, it’s in my price range and sounds like my best bet since im just starting out. did you have to buy this attachment tool as well? : https://www.dynamicmixersusa.com/product/ac560/

  • Graillotion

    Member
    September 9, 2020 at 7:09 pm

    The biggest functional difference between the cheap stick blenders….and the Mini-pro….is the ability to adjust speed.  None of the cheap ones that I burned through….could operate slowly.  Their slowest setting was faster than I often wanted in certain situations.  
    The other thing….as I burned through 3 of them in about 9 months….they actually ended up being no cheaper….than one good one.  :) 

    You can not measure cost…when you need to slowly stir air out of your emulsion towards the end.

    oooh okay, i see. i think i’ll end up going with this one, it’s in my price range and sounds like my best bet since im just starting out. did you have to buy this attachment tool as well? : https://www.dynamicmixersusa.com/product/ac560/

    As a bit of a perfectionist….I did buy that attachment….and I believe I paid more for it…than the machine.
    It was completely unnecessary!  Could not tell any difference in performance with the attachments that came with it (4).  ** Note ** so far I only used it in small 240 gm batches, my opinion may change as I ramp up into 4L batches.
    However…as I switch to a new project, using lamellar emulsifiers, I think it will come in handy….where I can easily switch attachments after making the initial emulsion, and then switch to the other attachment during cool down and stirring.
    Note….this is a very heavy…well built machine.  (Made in France)  So it will not be a light weight made in China gadget you may have seen in stores.  Being that it is therefore a little top heavy…always make sure to be careful…if you are leaving it standing up in a small sample beaker.  (Lost more than one batch…to an unfortunate tip over.)

  • domicanica

    Member
    September 10, 2020 at 12:21 am

    The biggest functional difference between the cheap stick blenders….and the Mini-pro….is the ability to adjust speed.  None of the cheap ones that I burned through….could operate slowly.  Their slowest setting was faster than I often wanted in certain situations.  
    The other thing….as I burned through 3 of them in about 9 months….they actually ended up being no cheaper….than one good one.  :) 

    You can not measure cost…when you need to slowly stir air out of your emulsion towards the end.

    oooh okay, i see. i think i’ll end up going with this one, it’s in my price range and sounds like my best bet since im just starting out. did you have to buy this attachment tool as well? : https://www.dynamicmixersusa.com/product/ac560/

    As a bit of a perfectionist….I did buy that attachment….and I believe I paid more for it…than the machine.
    It was completely unnecessary!  Could not tell any difference in performance with the attachments that came with it (4).  ** Note ** so far I only used it in small 240 gm batches, my opinion may change as I ramp up into 4L batches.
    However…as I switch to a new project, using lamellar emulsifiers, I think it will come in handy….where I can easily switch attachments after making the initial emulsion, and then switch to the other attachment during cool down and stirring.
    Note….this is a very heavy…well built machine.  (Made in France)  So it will not be a light weight made in China gadget you may have seen in stores.  Being that it is therefore a little top heavy…always make sure to be careful…if you are leaving it standing up in a small sample beaker.  (Lost more than one batch…to an unfortunate tip over.)

    Noted! I think I’ll definitely try to get my hands on that machine, thank you so much!

  • domicanica

    Member
    September 10, 2020 at 12:22 am

    Thank you all for the help, I really really appreciate it!

  • Graillotion

    Member
    September 10, 2020 at 3:50 am

    because some ingredients just don’t stand up to high shear mixing which is what the emulsifier would do right?

    What would be an example?  You have an ingredient that you want to leave as chunks?

  • ggpetrov

    Member
    September 10, 2020 at 1:01 pm

    Homogenisation is essential for bringing the stability and sensorials. Even if you can’t tell the difference at the first glance, the microscope could show the difference, and it is related with the more uniform structure of the emulsion and the smaller size of the fat droplets. This is important when you are creating an emulsions with higher water phase which are more unstable in general. Dinamyx is not a proffesional device though! If you are planning to make a big batches, you should check the proffesional devices.

  • suswang8

    Member
    November 6, 2020 at 7:34 pm

    The biggest functional difference between the cheap stick blenders….and the Mini-pro….is the ability to adjust speed.  None of the cheap ones that I burned through….could operate slowly.  Their slowest setting was faster than I often wanted in certain situations.  
    The other thing….as I burned through 3 of them in about 9 months….they actually ended up being no cheaper….than one good one.  :) 

    You can not measure cost…when you need to slowly stir air out of your emulsion towards the end.

    oooh okay, i see. i think i’ll end up going with this one, it’s in my price range and sounds like my best bet since im just starting out. did you have to buy this attachment tool as well? : https://www.dynamicmixersusa.com/product/ac560/

    As a bit of a perfectionist….I did buy that attachment….and I believe I paid more for it…than the machine.
    It was completely unnecessary!  Could not tell any difference in performance with the attachments that came with it (4).  ** Note ** so far I only used it in small 240 gm batches, my opinion may change as I ramp up into 4L batches.
    However…as I switch to a new project, using lamellar emulsifiers, I think it will come in handy….where I can easily switch attachments after making the initial emulsion, and then switch to the other attachment during cool down and stirring.
    Note….this is a very heavy…well built machine.  (Made in France)  So it will not be a light weight made in China gadget you may have seen in stores.  Being that it is therefore a little top heavy…always make sure to be careful…if you are leaving it standing up in a small sample beaker.  (Lost more than one batch…to an unfortunate tip over.)

    Graillotion,
    Are you still happy with your purpose when it comes to emulsifying?  Is it correct that you did not see a benefit in using the emulsifying attachment vs the homogenizer?

  • Graillotion

    Member
    November 6, 2020 at 8:44 pm

    Well….this is a tough question to answer.  To answer it correctly, I would have had to make two identical formulas, and use one attachment on each.
    When I make 165 based emulsions…I just use the blender attachment.  When I am making a lamellar emulsion, I have always used the emulsifier, since I am using it for a short amount of time, then switching to stirring.
    Those that have tried my lamellar emulsions have raved about them.  But as mentioned at the beginning, I do not know, had I used the other attachment, maybe they would have been just as good?
    So I have exclusively used the emulsifier for my new lamellar projects.

  • suswang8

    Member
    November 6, 2020 at 11:11 pm

    And when you say “emulsifier,” you mean the emulsifying blade — not the special homogenizing tip, right?

    Also, in your view, what do you think the minimum quantity is that you can use this on?  I think someone above claimed 100ml?  Thank you.

  • Graillotion

    Member
    November 7, 2020 at 12:04 am

    when I formulate….I make 150 gm batches.

    But I use a special beaker…that keeps the entire head submerged…see attached. (I use the tall skinny 250ml version)

    https://www.amazon.com/Beaker-Borosilicate-Single-Karter-Scientific/dp/B006VYY09Q/ref=sr_1_7?dchild=1&keywords=250ml+narrow+beaker&sr=8-7

    Sorry…I meant, I use the high dollar homogenizing tip….the one that cost more than the machine.  :pensive:

    And FYI:  Most stick blender heads will not fit down into that beaker…as it is narrow….part of why I use the roto stator emulsifying head.  :)

  • suswang8

    Member
    November 7, 2020 at 7:25 am

    Thank you.  I actually just bought the same beaker for the same reason.

    In terms of aeration, do you find you need to stir air out of your batches after you’ve used the homogenizing tip?  Or not necessary?

    I’m trying to decide between this, the Ocis 2.0, or maybe a used Turrax from eBay.  Hmmmm.

  • suswang8

    Member
    November 7, 2020 at 5:07 pm

    Also, on what speed setting are you able to comfortable use it?  I can see from this video, the person can’t safely take it past 3:
    https://www.youtube.com/watch?v=DHBO2O2b5rs&t=757s

    Thanks again.

  • ggpetrov

    Member
    November 7, 2020 at 5:48 pm

    Well….this is a tough question to answer.  To answer it correctly, I would have had to make two identical formulas, and use one attachment on each.
    When I make 165 based emulsions…I just use the blender attachment.  When I am making a lamellar emulsion, I have always used the emulsifier, since I am using it for a short amount of time, then switching to stirring.
    Those that have tried my lamellar emulsions have raved about them.  But as mentioned at the beginning, I do not know, had I used the other attachment, maybe they would have been just as good?
    So I have exclusively used the emulsifier for my new lamellar projects.

    Arlacel 165 could form lamellar emulsions!

  • Graillotion

    Member
    November 8, 2020 at 6:36 am

    suswang8 said:

    Thank you.  I actually just bought the same beaker for the same reason.

    In terms of aeration, do you find you need to stir air out of your batches after you’ve used the homogenizing tip?  Or not necessary?

    I’m trying to decide between this, the Ocis 2.0, or maybe a used Turrax from eBay.  Hmmmm.

    Actually funny you bring that up….when I send samples of the cream to my test group (all of whom have some skill set in cosmetics), one of the first things they ask me…..is how do you get a product with no air in it???  I don’t know the answer….that is just how it comes out.  
    Let me first say….the equipment seen in your video…is EXACTLY what I use (Dynamic version….same company).  I use Montanov 202 as a primary emulsifier, and also include a polymeric and some carbomer.  So my emulsions thicken instantly when the phases are combined.

    So no…I do not NEED to stir air out….but I do stir (with a spatula) at least 10 times t/o cool down.  The tall narrow beaker….allows me the keep the head submerged…so I suspect very little air is introduced.

  • Graillotion

    Member
    November 8, 2020 at 6:39 am

    suswang8 said:

    Also, on what speed setting are you able to comfortable use it?  I can see from this video, the person can’t safely take it past 3:
    https://www.youtube.com/watch?v=DHBO2O2b5rs&t=757s

    Thanks again.

    Loved the video….supports what I had suspected.

    Ok….I think this lady…has never really worked with her machine.  :)  Yes…if you start it at 4…the contents will jump out of the beaker!  However…if you start it at 2…and ease it up….you can take it to 6….no sweat.  I am LMAO….that she tried to start it at high speed.
    So I always run it at 6!!!!  But NEVER start it at 6….the beaker would be empty!  :p 

  • suswang8

    Member
    November 8, 2020 at 7:01 pm

    Yes.  I don’t understand why she felt the need to increase the speed at all; it seemed like things were going fine at Level 2.  

    I think I’m now deciding between this (Dynamic/Misceo) or a Bamix with whisk attachment.  Bamix would be about half the price, but downsides are (1) only two speeds and (2) tip/bell is much wider.   Hmmm.

  • Pharma

    Member
    November 8, 2020 at 8:44 pm
    I decided against stick blenders when I stumbled upon that crap cheap Ultra-Turrax-like Chinese knock-off thingamajig. I ordered it a few days ago.
    I wonder whether or not it will be any good or last long… likely not useful for more than 1 litre but that’s fine with me and probably not doing well with high viscosity emulsions (not so fine with me).
    I’ll keep you in the loop.
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