Hyaluronic acid

[Peruviangal]

Does anyone know if this is normal? I’ve never seen foam inside the bottle of my hyaluronic acid, I find this so weird. After cleansing and toning, I usually apply this to moist skin and foams a little but there’s never been foam inside the bottle.

[meou]

@Peruviangal I've never had that happen with my Hyaluronic Acid serum before but have heard of it happening with the niacinamide - it might be a component of the base formulation?

Other thing I can come up with is did you touch the dropper to your face? wondering if bacteria got in the bottle.