Does taking collagen really help your skin?

These days, my skin seems to sag more and wrinkles are increasing, so I’ve been trying various collagen products like Rich Collagen. I wonder if the improved appearance of my skin the next day is just a placebo effect or if eating collagen really improves the skin. I’m curious about what community members think.

A dermatologist on YouTube said they are not sure about the effectiveness of oral collagen, and instead, frequently applying moisturizing cream to keep the skin moist is better for preventing wrinkles.