When should I start skin elasticity care? I get confused between collagen and firming care.

Lately, every time I look in the mirror, I feel like my skin is sagging little by little, so I have a lot of concerns.

I'm not that old, but the elasticity around my cheeks isn't what it used to be.

So I’m planning to start taking care of my skin's elasticity in earnest, but there are so many types of elasticity care products that I have no idea where to start.

I've heard that taking oral collagen consistently is helpful, and that topical firming creams or ampoules help maintain elasticity on the skin's surface, so I'm having trouble deciding which one to choose.

I'm wondering if doing both together creates a synergy effect, or if it's better to focus on managing just one.

I've heard that ingredients like retinol and peptides are good for elasticity, but I'm hesitant to try them because I'm worried about whether they're safe for my sensitive skin. It would be really helpful if you could share a simple at-home firming routine or any products you felt were essential.

Please share your experiences regarding the order in which you started your skincare routine for elasticity, and whether there are any collagen or firming creams that actually worked for you!