Is it ok to use the M2 Eyelash Activating Serum in combination with eyelash dye?
Yes. If you have longer eyelashes, dying them emphasizes their look and lends them additional flair.
https://www.m2beaute.com/en/eye-care-faqs/lash-serum-faq-eyelash-activating-serum/is-it-ok-to-use-the-m2-eyelash-activating-serum-in-combination-with-eyelash-dye