Do you guys know how to make my hands a lil firm?

use sunscreen or body lotion with spf during the day and body lotion with retinol before sleep

I use the residue on my fingers when applying toner, serum, ampoule, cream and sunscreen on the back of my hand and I can tell it's made a big difference when comparing my hands as I use my right hand to apply and rub the reside on my left hand. My left hand looks younger.