How are the effects of a collagen booster different from other skin boosters?

I'm writing to ask because I'm curious how the effects of a collagen booster differ from other skin boosters!!

These days, when I search for skin boosters, there are so many types that the more I look, the more confused I get, haha. Some claim to provide hydration, some radiance, and some firmness, but the descriptions all say they improve the skin, so I really don't know which one is right for me.

My concern is internal dryness, but what I notice most is that my skin looks less firm than before. That's why I started looking into collagen boosters. Are the effects of collagen boosters more related to elasticity or skin density than hydration?

I am curious if there are differences in the recommended frequency, treatment cycle, and duration of effects when comparing collagen boosters and regular skin boosters. I would also like to know if it is okay for first-timers to start with a collagen booster, or if a hydration skin booster might be recommended first depending on my skin condition. If I consult with someone, would I be able to get a detailed explanation of the differences tailored to my specific skin concerns? Please help me out,先輩s!