cold process soap - scrap

ShengSheng Member
we've been trying to experiment on how we can recover the scrap on cold process soap. but unfortunately we were unsuccessful. :(
we have tried to re melt the soap to make a body wash but it exhibits foul odor.
does anybody here have any idea on how to reprocess scrap on cold process soaps?
thanks.

Comments

  • BelassiBelassi Member, PCF student
    How did you try to melt it?
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • What we do is put our offcuts through an extended cure period to make sure they are dry, and then put into a blending machine to make into a granule form. These are sold as a washing powder for clothes, and sells VERY VERY well.......we are basically unable to keep up with demand.
    Dr. Mike Thair
    Cofounder & Chief Formulator
    Indochine Natural
  • BobzchemistBobzchemist Member, PCF student
    Cured cold process soap can't be melted - you'll burn it. You can plod, extrude and stamp-mold it, or you can try to dissolve it in water, or you can grind it like Mike suggests. Otherwise, you should just toss it - soap is cheap.
    Robert Zonis, Sr. Formulation Chemist, Beaumont Products "All opinions and comments expressed are my own, have no relation to Beaumont Products, are fully copyrighted, and may not be used without written permission."
  • BelassiBelassi Member, PCF student
    It can be done but it needs to be fresh. Microwave. And it ends up like hot process.
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • ShengSheng Member
    Hello @Bellasi @ Bobzchemist @ Mikethair,
    what i meant by re melt was putting it in water. We wanted to make use of the scrap so we thought to make it as body wash but it produces off smell over time.
    @mikethair, how do you dry? do u put it in oven set at 110C? and then how do you granulates? do you put on hammermill? or can we run it in plodder machine once dried?
    hope to receive feedback from you guys. :)

  • BelassiBelassi Member, PCF student
    the smell is because of bacterial growth! Preservative required!
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • ShengSheng Member
    @Bellasi, yes i added euxyl pe 9010 at 0.80% but it exhibits " sour" scent after

  • BobzchemistBobzchemist Member, PCF student
    For a number of products, Euxyl PE9010 needs to be at 2%. Try it at 1%, !.5%, and 2% to see where your required level is.
    Robert Zonis, Sr. Formulation Chemist, Beaumont Products "All opinions and comments expressed are my own, have no relation to Beaumont Products, are fully copyrighted, and may not be used without written permission."
  • ShengSheng Member
    @Bobzchemist ok I'll try those dosage level.
    thanks
  • ozgirlozgirl Member, PCF student
    Schulke does not list Euxyl PE 9010 on its list of preservatives recommended for rinse off products. It is only recommended for leave on products.

    http://www.cosmetic-preservation.com/cosmetic-preservation/en/Applications/Rinse-off.php

    http://www.cosmetic-preservation.com/cosmetic-preservation/en/Applications/Leave-on.php

    The data sheet for Euxyl PE 9010 does say it can be used with some surfactants but you may be better off looking at other preservatives more suited to your application.
  • ShengSheng Member
    @ozgirl Euxyl PE 9010 can be used on rinse off products based on their recommendation as below.
    Solutions (e.g. shampoos, bath preparations and hand cleansing preparations) 0.5 - 1.0 %

  • BelassiBelassi Member, PCF student
    Solutions (e.g. shampoos, bath preparations and hand cleansing preparations) 0.5 - 1.0 % 
    - Your pH is very different.
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • ShengSheng Member
    @Bellassi, pH level of our cold process soap is between 8 - 10. and as per their data it is effective up to pH 12.
  • ozgirlozgirl Member, PCF student
    @Sheng I agree that the data sheet does say it can be used but I was pointing out that Schulke doesn't list it as a preferred option for rinse off products.
  • ShengSheng Member
    @ozgirl noted better if i change the preservative system to have a better chance of avoiding the "foul" scent. thanks 
  • Hello @Sheng .....in response to your queries: 

    - how do you dry? do u put it in oven set at 110C?

    We just leave it in our tem/humidity controlled soap cure room for a few weeks.

    - and then how do you granulates? do you put on hammermill? or can we run it in plodder machine once dried?

    Some improvements required here, but we put it through something like a mincing machine, and then into an electric blender. Not the best, but it works OK, and could be improved.
    Dr. Mike Thair
    Cofounder & Chief Formulator
    Indochine Natural
  • ShengSheng Member
    @mikethair thank you so much for your replies.
    if i may ask one last question, how is the ratio of the soap bar to powder detergent? can i add 25% of the scrap and mix it with our normal formulated powder detergent? thank you again and looking forward to hear from you.
  • Why this recycled soap flakes of ours is so popular (we can never keep up with demand) is that it appeals to those with sensitive skin and allergies to regular soap powder. It defeats the purpose if we start adding powder detergent.

    You can see a photo and read more about this product here:   http://indochinenatural.com/shop/eco-friendly-washing-powder-400-grams/

    Dr. Mike Thair
    Cofounder & Chief Formulator
    Indochine Natural
  • Chemist77Chemist77 Member, PCF student
    If I may ask, how do you compare the cleaning of this natural against the syndets??? Anti-redeposition/anti-encrustation/whitening/low foam-high foam, these parameters are looked into or just sensitive skin tag???
    Since I work with powders and liquids I was thinking if I can really push this concept to the customers in some cases but with all the necessary back-up????
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