Home › Cosmetic Science Talk › Formulating › What MW Polyisobutene does Sepiplus 400 use? FDA SRS registration.
Tagged: fda, polyisobutene, sepiplus, srs
-
What MW Polyisobutene does Sepiplus 400 use? FDA SRS registration.
Posted by Zink on April 9, 2015 at 10:34 pmIn the process of registering a OTC drug with the FDA, and you need to choose a MW according to their FDA Substance Registration System. Choices are:
Polyisobutene 1300, 1000. 2300. 45000 or 55000 MWZink replied 8 years, 1 month ago 3 Members · 6 Replies -
6 Replies
-
Incredibly sticky and adhesive, near zero spreadability. STP oil treatment is~90% 45000.
-
Wow, now that’s detailed knowledge! Neither the supplier Lotioncrafter or Seppic US knew.
-
It helps when you’ve worked with the polyisobutenes before. The same properties that make them horrible for skin care make them AWESOME for mascara.
-
I find Sepiplus to work extremely well as an emulsifier in a emulsion containing benzoyl peroxide, where emulsifying wax nf wasn’t stable enough. Rub in is comparably good too.
Any potential caveats?