It looks like you're new here. If you want to get involved, click one of these buttons!
Requests / Opportunities
Color and makeup
Starting a cosmetic line
In this Discussion
I write for a formulation advice about preservative potassium sorbate and sodium benzoate. Do you have experience on the use of these preservatives on leave on products?can they are irritanting? Thanks
Found that Sodium Benzoate for Facial products can be rather stingy / cause redness, so best avoided
UK based, Over 20 years in Toiletries, After a 5 year sabbatical doing cleaning products, back in the land of Personal Care
At what concentration?
I had redness with 0.2% potassium sorbate.
Thanks for your comments!
; How do you know that your redness come from potassium sorbate?
edited April 14
At first I suspected bisabolol:
(Please don't pay attention to the wrong usage of the verb 'invoke', like it's some sort of occult ritual, lol!)
; what i cannot understand, is that how the European comision, FDA or private label such as COSMOS could allow this preservative if it seems so obvious that many people notice redness with this product.
- it isn't surprising. If the problem only affects a small percentage of the population, there is no reason not to allow it.
This is why list of ingredients are required. Marketers may have taken advantage of LOIs, but the real reason for having them is to alert people who have allergies to certain ingredients.
Learn to formulate cosmetics
Forum Software Powered by Vanilla