How to improve lashes without orbital fat loss?

[all4bags(switcha&b)]

I want to gain thicker and/or longer lashes but I’m scared of orbital fat loss from the lash serums and other methods that most people recommend.
Is this side effect even significant? Or is it negligible enough for the trade off?
How can one improve their lashes effectively without losing orbital fat? What products do you recommend?

 

[sha]

oral min
latisse mainly causes orbital fat loss