-
When to add Preservatives - Formulating Hair Wax
Good day chemists,
i have a query regarding formulating my own hair clay wax.
should i add in the Preservatives as the last step or the essential oil blend first follow by preservatives.
One last thing, is there a way to find out the shelf life of my products.
Looking forward to your valuable input.
Thanks
-
5 Replies
-
It doesn’t really matter.
To find the shelf life, leave them on the shelf for a few years… I think I still have some usable hand cream that’s five years old. -
@Louiswch the add of preservative should be at end cause making wax needs hot process so adding preservative shoud be at the cool down step.
-
@Fekher do you have any suggestion perhaps at what temperature should you pour the essential oil and preservative? Thank you
-
@hayno28 almost below to 60 degree C but it depends on the type of preservative and essential oil.
-
To determine shelf life you have to conduct a stability test and microbial challenge test.
Log in to reply.