Our formula is concentrated. It may be potent for individuals with sensitivities. Here's some tips that may help you avoid any irritation:

1. Use a very light application, a little goes a long way.
2. Only apply serum to upper eyelash line (same location as liquid eyeliner)
3. Do not use on lower lashes.
4. Apply morning only until you acclimate. Night time is problematic for many women.
5. I have some customers that apply the serum to the lash line and then keep their eyes closed for a few seconds until it drys. You can even fan the area for moment to help.

Let us know if this does the trick!