Élan Supersonic Max Serum 2lan Supersonic Max Serum 2 is intended for the second eyebrow and eyelash flexing procedure stage. Ideally formulated in percentages, it guarantees maximum interaction with Serum 1, helps to strengthen the newly formed bonds in the hairs, and ensures the desired result. A conditioning complex based on polymers and argan oil, combined with hydrolyzed collagen, provides the hair with reliable protection. How Serum 2 works: Restores disulfide bonds and