Do I apply the firming cream to my entire face as well?

Lately, my skin feels dry and lacks elasticity, so I'm wondering if I need a firming cream.
I'm wondering if using a firming cream will help my facial contours look even a little bit better.
I would like to know if firming cream works immediately upon application, or if it requires consistent use to see results.
After comparing several products, I see significant differences in the ingredients of firming creams, so I'm having trouble deciding which one to choose.
I want to check if there is a firming cream that even sensitive skin can use safely.
I'm also curious if there is a synergistic effect when using the firming cream with other moisturizing products.
I'm a bit confused about the criteria for choosing a firming cream; I'm not sure if a high price automatically means it's good.
I'm also wondering if skin elasticity can be restored with just a firming cream.
I'm also wondering whether it's better to apply it to my whole face or just specific areas.
I would also like to know if consistency is ultimately the key, and if there are any precautions I should take when using firming cream.