-
Are chelators necessary in all formulas?
Are chelators necessary to prevent the release of metal ions which may cause pro oxidation? I know some actives like green tea are known to release metal ions but how about something very simple. For example, a simple toner formula containing distilled water, calendula extract, glycerine and a preservative system? Kind thanks!
-
4 Replies
-
No, not really, but a chelator helps preserve.
-
Since 99.9 percent of all “active” ingredients do absolutely nothing, no, chelators are not needed in those terms.
But, as @Belassi says, chelators do help boost your preservation system, so it’s usually wise to include them unless there’s a compelling reason not to.
-
Thank you very kindly.
-
Chelators have a variety of functions. They’re pretty valuable. If you’ve ever had a root canal, your endodontist would have used EDTA as part of the treatment of the nerve canal. (My dentist was surprised to learn that I buy EDTA by the kilo, it seemed an enormous amount to him.)
In shampoo, it helps both to preserve and also to soften the water being applied. In emulsions, it forms part of the ‘hurdle’ preservative system and also prevents discoloration caused by free metal ions. You often see a chelator such as EDTA together with polyols and alcohols acting together as a preservative foundation.
Your toner… I don’t see how it could pass the skin barrier.
Log in to reply.