Do you use preservatives in feel good Asc2P vitamin c serum?

We use a proprietary blend of plant-based preservatives, with our goal being to protect the formula from yeast and mold and extend shelf life by keeping the oils formalized. Feel good Asc2P vitamin c serum is preserved with a blend of Ecocertified preservatives including Fermented Radish Root, Honeysuckle Extract, Aspen Bark, and Gluconolactone.