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Kathon cg+ DMDM hydantoin as preservative for shampoo
If i use kathon cg(1.5% MIT/MCIT) with DMDM hydantoin or formalin as shampoo preservative, how much of each preservative should i use?
According to data about Lonzaserve® PC from lonza, a blend of <0.1% DMDM hydantoin+ <1ppm MIT/MCIT can preservative shampoo.
This would be my go to preservative blend if this is true. -
8 Replies
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MCIT/MIT and DMDM Hydantoin have the same target segment. Don’t see to much reason to use both - but still limited vs fungi. But think Unilever has some shampoos with both.
Lonzaserve PC would certainly be a novel combination.
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@PhilGeis - I heard they did this because the company they bought (Helene Curtis) had a resident microbial biofilm in the Suave shampoo filling lines which required Kathon to kill.
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Both are on some suave labels.
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@PhilGeis @Perry 1. this is the composition of Lonzaserve PC. Is this 71% of 55% DMDM hydantoin solution or 71% DMDM hydantoin solid?
What i want to know is how much total formaldehyde is in this mixture.
2. What percentage of Lonzaserve PC would you recommend in a Shampoo? In one file they recommend v0.05-0.2%. in another file they recommended 0.25-0.5%.
3. If i add the same amount of MIT/MCIT and formaldehyde (in form of DMDM hydantoin or formalin) as Lonzaserve PC, would it function the same as Lonzaserve PC?
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Ask Lonza #’s 1 and 2
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PhilGeis said:Ask Lonza #’s 1 and 2
Thanks
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DMDM hydantoin in shampoo. Does not cause scalp irritation??MCIT/MIT +Phenoxyethanol. not enough? @PhilGeis -
amitvedakar said:DMDM hydantoin in shampoo. Does not cause scalp irritation??MCIT/MIT +Phenoxyethanol. not enough? @PhilGeis
No.
With MCIT (at 5ppm) - you don’t need phenoxyethanol. Of these, phenoxyethanol would be the least preferred.