Inquiry on how to use skin elasticity ampoule

As I got older, I started to worry about skin elasticity, so I became interested in skin elasticity ampoules. I often saw posts about skin elasticity ampoules on the Maypure community.

I'm curious about the best time to use the Skin Firming Ampoule: morning or evening. I'd also like to know if it's okay to use it with other functional products. I'd also like to know if applying the Skin Firming Ampoule multiple times helps. If you have experience using it, please share your tips.